ci: add code scanning and require code owners

.github/CODEOWNERS

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+# SPDX-FileCopyrightText: 2026 Xquik Contributors
+# SPDX-License-Identifier: MIT
+
+* @kriptoburak @furkanerday

.github/workflows/codeql.yml

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+# Copyright the Xquik contributors.
+# SPDX-License-Identifier: MIT
+
+name: CodeQL
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  schedule:
+    - cron: "19 4 * * 3"
+
+permissions:
+  contents: read
+
+jobs:
+  analyze:
+    name: Analyze JavaScript And TypeScript
+    runs-on: ubuntu-24.04
+    timeout-minutes: 20
+    permissions:
+      contents: read
+      security-events: write
+    steps:
+      - name: Check out source
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@e0647621c2984b5ed2f768cb892365bf2a616ad1 # v4.37.2
+        with:
+          languages: javascript-typescript
+          build-mode: none
+          queries: security-extended
+
+      - name: Analyze
+        uses: github/codeql-action/analyze@e0647621c2984b5ed2f768cb892365bf2a616ad1 # v4.37.2

.github/workflows/scorecard.yml

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+# Copyright the Xquik contributors.
+# SPDX-License-Identifier: MIT
+
+name: OpenSSF Scorecard
+
+on:
+  push:
+    branches: [main]
+  schedule:
+    - cron: "41 3 * * 6"
+
+permissions: read-all
+
+jobs:
+  analysis:
+    name: Scorecard Analysis
+    runs-on: ubuntu-24.04
+    timeout-minutes: 20
+    permissions:
+      contents: read
+      security-events: write
+      id-token: write
+    steps:
+      - name: Check out source
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+
+      - name: Run analysis
+        uses: ossf/scorecard-action@4eaacf0543bb3f2c246792bd56e8cdeffafb205a # v2.4.3
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          publish_results: true
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: scorecard-results
+          path: results.sarif
+          retention-days: 5
+
+      - name: Upload to code scanning
+        uses: github/codeql-action/upload-sarif@e0647621c2984b5ed2f768cb892365bf2a616ad1 # v4.37.2
+        with:
+          sarif_file: results.sarif