chore: add validator package.json and update GHA

Author: rpocklin

.github/workflows/spectral-lint.yml

@@ -4,7 +4,13 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
-      - name: spectral-lint
-        run: ./validator/scripts/validate-all.sh
+    - uses: actions/checkout@v3
+    - uses: actions/setup-node@v3
+    - name: Install yarn
+      run: npm install -g yarn
+    - name: yarn
+      working-directory: ./validator
+      run: yarn install --immutable
+    - name: spectral-lint
+      working-directory: ./validator
+      run: yarn lint

.gitignore

@@ -1,4 +1,6 @@
 .DS_Store
 
+node_modules
+
 # JetBrains generated files
 .idea

validator/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "xero-openapi-validator",
+  "version": "1.0.0",
+  "description": "Validation for Xero OpenAPI specifications using Spectral",
+  "type": "module",
+  "scripts": {
+    "lint": "spectral lint '../xero*.yaml'"
+  },
+  "dependencies": {
+    "@stoplight/spectral-cli": "^6.0.0",
+    "@stoplight/spectral-owasp-ruleset": "2.0.1"
+  }
+}