chore: add yaml and toml dependencies, and create script for converting YAML to TOML

- Added 'yaml' and '@iarna/toml' dependencies in package.json.
- Created a new script.js file to process YAML files and convert them to TOML format.
- Added template.toml files for various blueprints in the blueprints directory.

blueprints/doublezero/template.toml

@@ -0,0 +1,21 @@
+[variables]
+main_domain = "${domain}"
+secret_key_base = "${base64:64}"
+
+[config]
+env = [
+  "DOUBLEZERO_HOST=${main_domain}",
+  "DOUBLEZERO_PORT=4000",
+  "SECRET_KEY_BASE=${secret_key_base}",
+  "AWS_ACCESS_KEY_ID=your-aws-access-key",
+  "AWS_SECRET_ACCESS_KEY=your-aws-secret-key",
+  "AWS_REGION=your-aws-region",
+  "SQS_URL=your-aws-sqs-url",
+  "SYSTEM_EMAIL="
+]
+mounts = [ ]
+
+  [[config.domains]]
+  serviceName = "doublezero"
+  port = 4_000
+  host = "${main_domain}"