ci: configure additional ci jobs

.codespellrc

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+[codespell]
+skip = *.pulsar.go,*.pb.go,*.pb.gw.go,*.bin,*.sum,*.mod,*.git,*.json
+ignore-words-list = usera,pres,crate
+quiet-level = 3

.github/dependabot.yml

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+version: 2
+updates:
+  # check dependencies in go.mod
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 10
+  # checks dependencies in github workflows
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 10

.github/mergify.yml

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+# This mergify configuration is used for backporting only. This setup
+# will backport a PR after being approved if it has the label 'backport'.
+# Please see the comments below for configuring branches, labels, etc.
+#
+pull_request_rules:
+  - name: backport to maintained branches
+    conditions:
+      - label=backport # create a label in your project called backport
+    actions:
+      backport:
+        branches: # the list of branches the pull request should be copied to.
+          - main
+        assignees: # assign newly created backport PR to author
+            - "{{ author }}"
+        title: "`[BP: {{ destination_branch }} <- #{{ number }}]` {{ title }}"

.github/workflows/codeql-analysis.yml

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+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ main ]
+  schedule:
+    - cron: '59 23 * * 5'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'go' ]
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
+        # Learn more:
+        # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v3
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+        # queries: ./path/to/local/query, your-org/your-repo/queries@main
+
+    # Autobuild attempts to build any compiled languages.
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v3
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following lines
+    #    and modify them (or add more) to build your code.
+
+    #- run: |
+    #   make install
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v3

.github/workflows/markdown-link-check.yml

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+name: Markdown Link Check
+
+on:
+  pull_request:
+
+jobs:
+  link-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: gaurav-nelson/[email protected]

.github/workflows/spell-check.yml

@@ -0,0 +1,24 @@
+name: Spell Check
+
+on:
+  pull_request:
+
+jobs:
+  spellcheck:
+    name: Run codespell
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.x'
+
+    - name: Install codespell
+      run: pip install codespell
+
+    - name: Run codespell
+      run: codespell

.github/workflows/title-format.yml

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+name: "Lint PR Title"
+
+on:
+  pull_request_target:
+    types:
+      - opened
+      - edited
+      - synchronize
+
+permissions:
+  pull-requests: read
+
+jobs:
+  main:
+    name: Validate PR title
+    runs-on: ubuntu-latest
+    steps:
+      - uses: amannn/action-semantic-pull-request@v5
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}