ci: 🎡 split workflows and add badge to readme

.github/workflows/monorepo-validate.yaml

@@ -1,7 +1,9 @@
 name: Validate Monorepo
 on: [push]
 jobs:
-  validate:
+
+  compliance:
+    name: Dependency License Compliance
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
@@ -10,4 +12,14 @@ jobs:
           node-version: '12.x'
       - run: yarn install
       - run: yarn run compliance:licenses
+
+  audit:
+    name: Dependency Security Audit
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: '12.x'
+      - run: yarn install
       - run: yarn audit