Revert "Delete codspeed.yml"

This reverts commit 84d8312.

Author: IndrajeetPatil

.github/workflows/codspeed.yml

@@ -0,0 +1,34 @@
+name: CodSpeed Benchmarks
+
+on:
+  push:
+    branches:
+      - "main"
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  benchmarks:
+    name: Run benchmarks
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v5
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v6
+
+      - name: Set up Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: 3.13
+
+      - name: Install the project
+        run: uv sync --all-extras --dev
+
+      - name: Run the benchmarks
+        uses: CodSpeedHQ/action@v4
+        with:
+          mode: instrumentation
+          run: uv run pytest tests/ --codspeed
+          token: ${{ secrets.CODSPEED_TOKEN }}