Add initial version with help and admission controller (#1)

- It adds a helm chart that will be hosted in the Github pages URL of this repository
- an admission controller operator 
- Basic documentation for installing the operator, configuring CRDs and example pod configuration

.github/workflows/helm.yml

@@ -0,0 +1,36 @@
+name: Release Helm Chart and Carvel package
+
+on:
+  push:
+    paths:
+      # update this file to trigger helm chart release
+      - 'helm/netbird-operator/Chart.yaml'
+    branches:
+      - main
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3.1.0
+        with:
+          fetch-depth: 0
+
+      - name: Configure Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
+
+      - name: Install Helm
+        uses: azure/setup-helm@v3.4
+        with:
+          version: v3.4.2
+
+      - name: Run chart-releaser
+        uses: helm/chart-releaser-action@v1.4.1
+        with:
+          charts_dir: helm
+        env:
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+          CR_RELEASE_NAME_TEMPLATE: "helm-v{{ .Version }}"