Steps to Promote SDK Features from Alpha to Beta (#3814)

* Steps to Promote SDK Features from Alpha to Beta

* make more generic

* modify steps

* Review changes

* review change

pkg/util/runtime/features.go

@@ -100,6 +100,21 @@ var (
 	// * change the value in site/content/en/docs/Guides/feature-stages.md.
 	// * Ensure that the features in each file are organized categorically and alphabetically.
 	//
+	// Feature Promotion: alpha->beta for SDK Functions
+	// * Move methods from alpha->beta files:
+	// 		- From proto/sdk/alpha/alpha.proto to proto/sdk/beta/beta.proto
+	//		- For each language-specific SDK (e.g., Go, C#, Rust):
+	//			- Move implementation files (e.g., alpha.go to beta.go)
+	//			- Move test files (e.g., alpha_test.go to beta_test.go)
+	//			- Note: Delete references to 'alpha' in the moved alpha methods.
+	// * Change all code and documentation references of alpha->beta:
+	//		- Proto Files: proto/sdk/sdk.proto `[Stage:Alpha]->[Stage:Beta]`
+	//		- SDK Implementations: Update in language-specific SDKs (e.g., sdks/go/sdk.go, sdks/csharp/sdk/AgonesSDK.cs).
+	//		- Examples & Tests: Adjust in files like examples/simple-game-server/main.go and language-specific test files.
+	// * Modify automation scripts in the build/build-sdk-images directory to support beta file generation.
+	// * Run `make gen-all-sdk-grpc` to generate the required files, then execute the `make run-sdk-conformance-test-go` command and address any issues that arise.
+	// * NOTE: DO NOT EDIT any autogenerated code. `make gen-all-sdk-grpc` will take care of it.
+	//
 	// To promote a feature from beta->GA:
 	// * remove all places consuming the feature gate and fold logic to true
 	// * consider cleanup - often folding a gate to true allows refactoring