use a composite action

.github/actions/setup-tools/action.yml

@@ -0,0 +1,27 @@
+name: Setup tools
+description: Installs all tools necessary for building and testing the project.
+
+runs:
+  using: "composite"
+  steps:
+    - name: Setup mise
+      uses: jdx/mise-action@v2
+
+    - name: Go cache paths
+      id: go-cache-paths
+      shell: sh
+      run: |
+        echo "::set-output name=go-build::$(go env GOCACHE)"
+        echo "::set-output name=go-mod::$(go env GOMODCACHE)"
+
+    - name: Go build cache
+      uses: actions/cache@v2
+      with:
+        path: ${{ steps.go-cache-paths.outputs.go-build }}
+        key: ${{ runner.os }}-go-build-${{ hashFiles('**/go.sum') }}
+
+    - name: Go mod cache
+      uses: actions/cache@v2
+      with:
+        path: ${{ steps.go-cache-paths.outputs.go-mod }}
+        key: ${{ runner.os }}-go-mod-${{ hashFiles('**/go.sum') }}