ARTESCA-16170: Add github actions

.github/CODEOWNERS

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+* @scality/metalk8s

.github/workflows/pre-merge.yaml

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+name: "Pre Merge"
+
+on:
+  workflow_dispatch:
+
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  lint:
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: 'go.mod'
+      - name: Run linters
+        uses: golangci/golangci-lint-action@v8
+        with:
+          version: v2.5.0
+
+  test:
+    uses: ./.github/workflows/test.yaml
+    secrets: inherit

.github/workflows/test.yaml

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+name: Tests
+
+on:
+  workflow_call:
+
+jobs:
+  test:
+    name: Run on Ubuntu
+    runs-on: ubuntu-latest
+    steps:
+      - name: Clone the code
+        uses: actions/checkout@v4
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: 'go.mod'
+      - name: Running Tests
+        run: |
+          go test -v -race ./...