Add semver workflow

Author: Not-Nik

.github/workflows/semver.yml

@@ -0,0 +1,43 @@
+name: Check semver
+on:
+  pull_request:
+  merge_group:
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  semver:
+    name: Check semver
+    runs-on: ubuntu-24.04
+    timeout-minutes: 20
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+          fetch-depth: 0
+
+      - uses: mozilla/actions/rust@25cb84d060946c0ad6d2c3f79da479b16d180d71 # v1.1.0
+        with:
+          tools: cargo-semver-checks
+          token: ${{ github.token }}
+
+      - uses: mozilla/actions/nss@25cb84d060946c0ad6d2c3f79da479b16d180d71 # v1.1.0
+        with:
+          version-file: min_version.txt
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Check semver
+        env:
+          BASE_REF: ${{ github.event.pull_request.base.ref || github.event.repository.default_branch }}
+        run: |
+          # shellcheck disable=SC2086
+          cargo semver-checks --default-features --baseline-rev "origin/$BASE_REF"