[PETOSS-829] Add codegen testing and replace linters (#757)

- New check to validate that codegen via Xero internal repo succeeds.
- New way to create GitHub Release.
- Swapped spectral and yamllint checks for MegaLinter.

---------

Co-authored-by: Chris Mitchell <[email protected]>

Author: ryanNexus

.github/get-access-token/index.js

@@ -0,0 +1,27 @@
+import {Octokit} from "@octokit/rest";
+import {createAppAuth} from "@octokit/auth-app"
+
+export const getAccessToken = async () => {
+
+ const {GITHUB_APP_ID, GITHUB_APP_PRIVATE_KEY} = process.env
+
+ const octoKitInstance = new Octokit({
+  authStrategy: createAppAuth,
+  auth: {
+   appId: GITHUB_APP_ID,
+   privateKey: GITHUB_APP_PRIVATE_KEY
+  }
+ });
+
+ const {data: installations} = await octoKitInstance.rest.apps.listInstallations()
+
+ if(!installations.length) {
+   throw new Error("No Installations found for this github app")
+ }
+
+ const installationId = installations[0].id;
+
+ const installationAccessToken = await octoKitInstance.rest.apps.createInstallationAccessToken({installation_id: installationId})
+
+ return installationAccessToken.data.token
+}

.github/get-access-token/package-lock.json

@@ -0,0 +1,9 @@
+{
+  "name": "get-access-token",
+  "main": "index.js",
+  "type": "module",
+  "dependencies": {
+    "@octokit/auth-app": "^7.1.1",
+    "@octokit/rest": "^21.0.2"
+  }
+}

.github/get-access-token/package.json

@@ -0,0 +1,21 @@
+{
+  "branches": [
+    "master"
+  ],
+  "tagFormat": "${version}",
+  "plugins": [
+    [
+      "@semantic-release/release-notes-generator",
+      {
+        "preset": "angular",
+        "writerOpts": {
+          "headerPartial": "## What's changed",
+          "footerPartial": "\n**Full Changelog**:https://github.com/XeroAPI/Xero-OpenAPI/compare/{{previousTag}}...{{version}}"
+        }
+      }
+    ],
+    "@semantic-release/commit-analyzer",
+    "@semantic-release/github",
+    "@semantic-release/git"
+  ]
+}