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.ts

@@ -0,0 +1,27 @@
+import Action from './action';
+import BuildParameters from './build-parameters';
+import Cache from './cache';
+import Docker from './docker';
+import Input from './input';
+import ImageTag from './image-tag';
+import Output from './output';
+import Platform from './platform';
+import Project from './project';
+import Unity from './unity';
+import Versioning from './versioning';
+import Kubernetes from './kubernetes';
+
+export {
+  Action,
+  BuildParameters,
+  Cache,
+  Docker,
+  Input,
+  ImageTag,
+  Output,
+  Platform,
+  Project,
+  Unity,
+  Versioning,
+  Kubernetes,
+};