feat(supported-version): add user-defined kind (#28)

`kind` is a new input property for the `supported-version` action which
allows one to define what specific versions of Magento they support.

Currently, `kind` supports `latest`, `currently-supported`, and `custom`. See the
README for `supported-version` if you want more specifics

package.json

@@ -0,0 +1,30 @@
+{
+  "name": "@graycore/github-actions-magento",
+  "version": "1.0.0",
+  "description": "Github Actions for Magento 2",
+  "scripts": {
+    "test": "cd supported-version && npm run test && cd -"
+  },
+  "private": true,
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/graycoreio/github-actions-magento2.git"
+  },
+  "author": "",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/graycoreio/github-actions-magento2/issues"
+  },
+  "homepage": "https://github.com/graycoreio/github-actions-magento2#readme",
+  "dependencies": {
+    "@actions/core": "^1.9.0"
+  },
+  "devDependencies": {
+    "@types/jest": "^28.1.6",
+    "@types/node": "^18.6.4",
+    "esbuild": "^0.14.53",
+    "jest": "^28.1.3",
+    "ts-jest": "^28.0.7",
+    "typescript": "^4.7.4"
+  }
+}