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/listmonk/template.toml

@@ -0,0 +1,29 @@
+[variables]
+main_domain = "${domain}"
+
+[config]
+  [[config.domains]]
+  serviceName = "app"
+  port = 9_000
+  host = "${main_domain}"
+
+  [[config.mounts]]
+  filePath = "config.toml"
+  content = """
+[app]
+address = "0.0.0.0:9000"
+
+[db]
+host = "db"
+port = 5432
+user = "listmonk"
+password = "listmonk"
+database = "listmonk"
+
+ssl_mode = "disable"
+max_open = 25
+max_idle = 25
+max_lifetime = "300s"
+
+params = "" 
+"""