Add OWASP Blockchain AppSec Standard metadata

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+      time: '00:45'

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

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+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: Jon McCoy
+    email: jon.mccoy@owasp.org
+    github: theJonMccoy
+  - name: Didar Gelici
+    email: didar.gelici@owasp.org
+level: 2
+name: OWASP Blockchain AppSec Standard
+pitch: We focus on security of in blockchain and web3 and share our knowledge on attack vectors and defense mechanisms. We strongly encourage your contribution
+  to these topics and content.
+repositories:
+  - name: www-project-blockchain-appsec-standard
+    url: https://github.com/OWASP/www-project-blockchain-appsec-standard
+    description: OWASP Foundation Web Repository
+tags:
+  - blockchain
+  - cryptocurrency
+  - web3
+type: documentation
+website: https://owasp.org/www-project-blockchain-appsec-standard