Add codegen check workflow

Make sure that the generated clients are up to date.

.github/workflows/check-codegen.yml

@@ -0,0 +1,26 @@
+name: Check Codegen
+
+on:
+  pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - '**/*.md'
+
+jobs:
+  check-codegen:
+    runs-on: self-hosted
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          ref: ${{ github.head_ref }}
+      - uses: actions/setup-go@v2
+        with:
+          go-version: '1.17'
+      - name: Run make generate
+        run: make generate
+      - name: Check if there are changes
+        id: changes
+        uses: UnicornGlobal/has-changes-action@v1.0.11
+      - name: Process changes
+        if: steps.changes.outputs.changed == 1
+        run: echo "Please run 'make generate' and commit the generated code."

apis/compute/machine_types.go

@@ -25,6 +25,8 @@ import (
 
 // MachineSpec defines the desired state of Machine
 type MachineSpec struct {
+	// Foo
+	Foo string
 	// MachineClassRef is a reference to the machine class/flavor of the machine.
 	MachineClassRef corev1.LocalObjectReference
 	// MachinePoolSelector selects a suitable MachinePoolRef by the given labels.

apis/compute/v1alpha1/machine_types.go

@@ -25,6 +25,8 @@ import (
 
 // MachineSpec defines the desired state of Machine
 type MachineSpec struct {
+	// Foo
+	Foo string `json:"foo,omitempty"`
 	// MachineClassRef is a reference to the machine class/flavor of the machine.
 	MachineClassRef corev1.LocalObjectReference `json:"machineClassRef"`
 	// MachinePoolSelector selects a suitable MachinePoolRef by the given labels.