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/open-webui/template.toml

@@ -0,0 +1,14 @@
+[variables]
+main_domain = "${domain}"
+
+[config]
+mounts = [ ]
+
+  [[config.domains]]
+  serviceName = "open-webui"
+  port = 8_080
+  host = "${main_domain}"
+
+  [config.env]
+  OLLAMA_DOCKER_TAG = "0.1.47"
+  WEBUI_DOCKER_TAG = "0.3.7"