Add OWASP AI Model Watermarking metadata

.github/workflows/validate-owasp-metadata.yaml

@@ -0,0 +1,24 @@
+name: Validate OWASP entity metadata
+
+on:
+  pull_request:
+    paths:
+      - '*.owasp.yaml'
+  push:
+    paths:
+      - '*.owasp.yaml'
+
+concurrency:
+  cancel-in-progress: true
+  group: ${{ github.repository }}-${{ github.workflow }}-${{ github.ref }}
+
+jobs:
+  validate-metadata:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v5
+
+      - name: Validate metadata file
+        uses: owasp/nest-schema/.github/actions/validate@a733198b4a942eb12d3ee8629cd9e0d409b1b2b9

project.owasp.yaml

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+audience:
+  - breaker
+  - builder
+leaders:
+  - name: Krishanu Dhar
+    email: krish.dhar@owasp.org
+    github: ronykris
+level: 2
+name: OWASP AI Model Watermarking
+pitch: A very brief, one-line description of your project
+repositories:
+  - name: www-project-ai-model-watermarking
+    url: https://github.com/OWASP/www-project-ai-model-watermarking
+    description: OWASP Foundation web repository
+tags:
+  - example-tag
+  - custom-tag-1
+  - custom-tag-2
+type: code
+website: https://owasp.org/www-project-ai-model-watermarking