feat(licenses): implement license management system with email notifications

- Added database schema for licenses, including types and statuses.
- Implemented license creation, validation, and activation functionalities.
- Integrated email templates for sending license keys and resend requests.
- Updated package dependencies and configuration for PostgreSQL integration.
- Introduced migration and truncation scripts for database management.
- Enhanced API endpoints for license operations with error handling and validation.

apps/licenses/drizzle/0000_furry_nico_minoru.sql

@@ -0,0 +1,21 @@
+CREATE TYPE "public"."billing_type" AS ENUM('monthly', 'annual');--> statement-breakpoint
+CREATE TYPE "public"."license_status" AS ENUM('active', 'expired', 'cancelled');--> statement-breakpoint
+CREATE TYPE "public"."license_type" AS ENUM('basic', 'premium', 'business');--> statement-breakpoint
+CREATE TABLE "licenses" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"customer_id" text NOT NULL,
+	"product_id" text NOT NULL,
+	"license_key" text NOT NULL,
+	"status" "license_status" DEFAULT 'active' NOT NULL,
+	"type" "license_type" NOT NULL,
+	"billing_type" "billing_type" NOT NULL,
+	"server_ip" text,
+	"activated_at" timestamp,
+	"last_verified_at" timestamp,
+	"expires_at" timestamp NOT NULL,
+	"created_at" timestamp DEFAULT CURRENT_TIMESTAMP,
+	"updated_at" timestamp DEFAULT CURRENT_TIMESTAMP,
+	"metadata" text,
+	"email" text NOT NULL,
+	CONSTRAINT "licenses_license_key_unique" UNIQUE("license_key")
+);

apps/licenses/drizzle/meta/0000_snapshot.json

@@ -0,0 +1,164 @@
+{
+  "id": "41745f43-6627-49f6-afa3-ab192559b5a7",
+  "prevId": "00000000-0000-0000-0000-000000000000",
+  "version": "7",
+  "dialect": "postgresql",
+  "tables": {
+    "public.licenses": {
+      "name": "licenses",
+      "schema": "",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "uuid",
+          "primaryKey": true,
+          "notNull": true,
+          "default": "gen_random_uuid()"
+        },
+        "customer_id": {
+          "name": "customer_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "product_id": {
+          "name": "product_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "license_key": {
+          "name": "license_key",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "status": {
+          "name": "status",
+          "type": "license_status",
+          "typeSchema": "public",
+          "primaryKey": false,
+          "notNull": true,
+          "default": "'active'"
+        },
+        "type": {
+          "name": "type",
+          "type": "license_type",
+          "typeSchema": "public",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "billing_type": {
+          "name": "billing_type",
+          "type": "billing_type",
+          "typeSchema": "public",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "server_ip": {
+          "name": "server_ip",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "activated_at": {
+          "name": "activated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "last_verified_at": {
+          "name": "last_verified_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "expires_at": {
+          "name": "expires_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "default": "CURRENT_TIMESTAMP"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "default": "CURRENT_TIMESTAMP"
+        },
+        "metadata": {
+          "name": "metadata",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false
+        },
+        "email": {
+          "name": "email",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {
+        "licenses_license_key_unique": {
+          "name": "licenses_license_key_unique",
+          "nullsNotDistinct": false,
+          "columns": [
+            "license_key"
+          ]
+        }
+      },
+      "policies": {},
+      "checkConstraints": {},
+      "isRLSEnabled": false
+    }
+  },
+  "enums": {
+    "public.billing_type": {
+      "name": "billing_type",
+      "schema": "public",
+      "values": [
+        "monthly",
+        "annual"
+      ]
+    },
+    "public.license_status": {
+      "name": "license_status",
+      "schema": "public",
+      "values": [
+        "active",
+        "expired",
+        "cancelled"
+      ]
+    },
+    "public.license_type": {
+      "name": "license_type",
+      "schema": "public",
+      "values": [
+        "basic",
+        "premium",
+        "business"
+      ]
+    }
+  },
+  "schemas": {},
+  "sequences": {},
+  "roles": {},
+  "policies": {},
+  "views": {},
+  "_meta": {
+    "columns": {},
+    "schemas": {},
+    "tables": {}
+  }
+}

apps/licenses/drizzle/meta/_journal.json

@@ -0,0 +1,13 @@
+{
+  "version": "7",
+  "dialect": "postgresql",
+  "entries": [
+    {
+      "idx": 0,
+      "version": "7",
+      "when": 1742364501431,
+      "tag": "0000_furry_nico_minoru",
+      "breakpoints": true
+    }
+  ]
+}