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

src/model/index.test.ts

@@ -0,0 +1,10 @@
+import * as Index from '.';
+
+describe('Index', () => {
+  test.each(['Action', 'BuildParameters', 'Cache', 'Docker', 'ImageTag', 'Input', 'Platform', 'Project', 'Unity'])(
+    'exports %s',
+    (exportedModule) => {
+      expect(Index[exportedModule]).toBeDefined();
+    },
+  );
+});