Refactor action to typescript (#226)

* Refactor to typescript (config part)

* Refactor to typescript (convert extensions, minor fixes)

* Refactor to typescript (move from `action` to `dist`)

* Re-enable integrity-check for dist index.js

* Fix all tests and lints

* fix parsing major versions

* Test patch level to be digits only

* debug

* debug

* uncache

* manual compile

* debug

* debug

* Debug

* Build lib - doh

* remove diff check

* Make kubernetes workflow manual

* Properly generate 3 digit for simple major tags

* Remove ts-ignore

* re-enable cache

dist/default-build-script/Assets/Editor/System/ProcessExtensions.cs

@@ -0,0 +1,42 @@
+using System.Diagnostics;
+using System.Text;
+
+public static class ProcessExtensions
+{
+  // Execute an application or binary with given arguments
+  //
+  // See: https://stackoverflow.com/questions/4291912/process-start-how-to-get-the-output
+  public static int Run(this Process process, string application,
+    string arguments, string workingDirectory, out string output,
+    out string errors)
+  {
+    // Configure how to run the application
+    process.StartInfo = new ProcessStartInfo {
+      CreateNoWindow = true,
+      UseShellExecute = false,
+      RedirectStandardError = true,
+      RedirectStandardOutput = true,
+      FileName = application,
+      Arguments = arguments,
+      WorkingDirectory = workingDirectory
+    };
+
+    // Read the output
+    var outputBuilder = new StringBuilder();
+    var errorsBuilder = new StringBuilder();
+    process.OutputDataReceived += (_, args) => outputBuilder.AppendLine(args.Data);
+    process.ErrorDataReceived += (_, args) => errorsBuilder.AppendLine(args.Data);
+
+    // Run the application and wait for it to complete
+    process.Start();
+    process.BeginOutputReadLine();
+    process.BeginErrorReadLine();
+    process.WaitForExit();
+
+    // Format the output
+    output = outputBuilder.ToString().TrimEnd();
+    errors = errorsBuilder.ToString().TrimEnd();
+
+    return process.ExitCode;
+  }
+}