feat: implement helm chart generation and publishing

- Added functionality to generate a Helm chart for the application.
- Implemented chart packaging and pushing to an OCI registry.
- Utilized `helm package` and `helm push` commands.
- Included configurable registry URL and project name.
- Added tests to verify chart generation and packaging.
- Improved error handling and logging.

examples/rust/webapp/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "webapp"
+name = "harmony-example-rust-webapp"
 version = "0.1.0"
 edition = "2021"
 
@@ -41,7 +41,7 @@ panic = "abort"
 
 [package.metadata.leptos]
 # The name used by wasm-bindgen/cargo-leptos for the JS/WASM bundle. Defaults to the crate name
-output-name = "webapp"
+output-name = "harmony-example-rust-webapp"
 # The site root folder is where cargo-leptos generate all output. WARNING: all content of this folder will be erased on a rebuild. Use it in your server setup.
 site-root = "target/site"
 # The site-root relative folder where all compiled output (JS, WASM and CSS) is written
@@ -55,7 +55,7 @@ style-file = "style/main.scss"
 # Optional. Env: LEPTOS_ASSETS_DIR.
 assets-dir = "assets"
 # The IP and port (ex: 127.0.0.1:3000) where the server serves the content. Use it in your server setup.
-site-addr = "127.0.0.1:3000"
+site-addr = "0.0.0.0:3000"
 # The port to use for automatic reload monitoring
 reload-port = 3001
 # [Optional] Command to use when running end2end tests. It will run in the end2end dir.