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

supported-version/src/kind/compute-kind.spec.ts

@@ -0,0 +1,11 @@
+import { isValidKind } from "./compute-kind";
+
+describe('isValidKind', () => {
+    it('returns `true` if its a valid kind', () => {
+        expect(isValidKind("latest")).toBe(true);
+    });
+
+    it('returns `false` if it is not a valid kind', () => {
+        expect(isValidKind("taco")).toBe(false);
+    })
+})

supported-version/src/kind/compute-kind.ts

@@ -0,0 +1,21 @@
+/**
+ * Acceptable arguments for version `kind`
+ */
+export const KNOWN_KINDS = {
+    'currently-supported': true,
+    'latest': true,
+    'custom': true,
+}
+
+export const isValidKind = (kind: string): boolean => {
+    return kind in KNOWN_KINDS;
+};
+
+export const validateOrError = (kind: string): true =>  {
+    if(isValidKind(kind)){
+        return true;   
+    }
+    else {
+        throw new Error(`Invalid kind provided, supported kinds are: ${Object.keys(KNOWN_KINDS).join(', ')}`);
+    }
+}

supported-version/src/kind/currently-supported.json

@@ -0,0 +1,9 @@
+[
+  "magento/project-community-edition:>=2.3 <2.4",
+  "magento/project-community-edition:>=2.4.0 <2.4.1",
+  "magento/project-community-edition:>=2.4.1 <2.4.2",
+  "magento/project-community-edition:>=2.4.2 <2.4.3",
+  "magento/project-community-edition:>=2.4.3 <2.4.4",
+  "magento/project-community-edition:>=2.4.4 <2.4.5",
+  "magento/project-community-edition"
+]

supported-version/src/kind/latest.json

@@ -0,0 +1,3 @@
+[
+  "magento/project-community-edition"
+]