build(tests): add run tests workflow

Fixes: #5

.github/workflows/run_tests.yml

@@ -0,0 +1,24 @@
+name: Run gopeasant tests
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go-version: ["1.20", "1.21", "1.22"]
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup Go ${{ matrix.node-version }}
+        uses: actions/setup-go@v5
+        with:
+          node-version: ${{ matrix.go-version }}
+      - name: Install dependencies
+        run: |
+          go mod tidy
+      - name: Run go unit tests
+        run: |
+          CGO_ENABLED=0 go clean -testcache && go test  . ./testrunner