BTHLABS-0000: development workflow

Co-authored-by: Tomek Wójcik <labs@tomekwojcik.pl>
Co-committed-by: Tomek Wójcik <labs@tomekwojcik.pl>

.gitea/actions/setup-k8s/action.yaml

@@ -0,0 +1,32 @@
+name: "Set up k8s"
+description: "Downloads and installs k8s tools"
+inputs:
+  arch:
+    description: "Architecture"
+    required: true
+  kubectl-version:
+    description: "kubectl version to install"
+    required: false
+    default: "1.33.4"
+  kustomize-version:
+    description: "kustomize version to install"
+    required: false
+    default: "5.7.1"
+runs:
+  using: "composite"
+  steps:
+    - name: "Install k8s tools"
+      shell: "bash"
+      run: |
+        set -x
+        mkdir -p /opt/k8s/bin /opt/k8s/etc /opt/k8s/src
+
+        wget -O /opt/k8s/src/kubectl "https://nexus.bthlabs.pl/repository/ops-tools/k8s/kubectl-${{ inputs.kubectl-version }}-linux-${{ inputs.arch }}"
+        chmod a+x /opt/k8s/src/kubectl
+        mv /opt/k8s/src/kubectl /opt/k8s/bin
+
+        wget -O /opt/k8s/src/kustomize "https://nexus.bthlabs.pl/repository/ops-tools/k8s/kustomize-${{ inputs.kustomize-version }}-linux-${{ inputs.arch }}"
+        chmod a+x /opt/k8s/src/kustomize
+        mv /opt/k8s/src/kustomize /opt/k8s/bin
+
+        rm -rf /opt/k8s/src/