Initial homelab GitOps repository setup

This commit establishes the foundation for the homelab GitOps repository:

- Created layered architecture (infrastructure/platform/apps)
- Added MCP servers umbrella chart with SOPS-encrypted secrets
- Configured Flux Kustomizations for infrastructure and platform layers
- Set up SOPS + Age for secrets management
- Added .gitignore and documentation

MCP servers include:
- Gateway with auth (API keys in encrypted secrets)
- n8n MCP (workflow automation)
- Playwright MCP (browser automation)
- Kubernetes MCP (kubectl operations)
- GitHub MCP (repository management)
- Gitea MCP (self-hosted git)
- SQLite MCP (database operations)
- Filesystem MCP (file operations)
- Fetch MCP (HTTP requests)
- Memory MCP (shared memory/state)

All secrets are encrypted with SOPS using Age encryption.

platform/mcp-servers/Chart.yaml

@@ -0,0 +1,79 @@
+apiVersion: v2
+name: mcp-umbrella
+description: Umbrella Helm chart that deploys all MCP servers + MCP Gateway
+type: application
+version: 1.0.0
+appVersion: "1.0.0"
+keywords:
+  - mcp
+  - model-context-protocol
+  - automation
+  - ai
+  - n8n
+  - gateway
+maintainers:
+  - name: CaffeineTux
+home: https://github.com/modelcontextprotocol
+sources:
+  - https://github.com/modelcontextprotocol/servers
+dependencies:
+  - name: mcp-gateway
+    version: "1.0.0"
+    repository: "file://../mcp-gateway"
+    condition: mcp-gateway.enabled
+  - name: n8n-mcp
+    version: "1.0.0"
+    repository: "file://../n8n-mcp"
+    condition: n8n-mcp.enabled
+  - name: playwright-mcp
+    version: "1.0.0"
+    repository: "file://../playwright-mcp"
+    condition: playwright-mcp.enabled
+  - name: kubernetes-mcp
+    version: "1.0.0"
+    repository: "file://../kubernetes-mcp"
+    condition: kubernetes-mcp.enabled
+  - name: github-mcp
+    version: "1.0.0"
+    repository: "file://../github-mcp"
+    condition: github-mcp.enabled
+  - name: postgresql-mcp
+    version: "1.0.0"
+    repository: "file://../postgresql-mcp"
+    condition: postgresql-mcp.enabled
+  - name: sqlite-mcp
+    version: "1.0.0"
+    repository: "file://../sqlite-mcp"
+    condition: sqlite-mcp.enabled
+  - name: prometheus-mcp
+    version: "1.0.0"
+    repository: "file://../prometheus-mcp"
+    condition: prometheus-mcp.enabled
+  - name: slack-mcp
+    version: "1.0.0"
+    repository: "file://../slack-mcp"
+    condition: slack-mcp.enabled
+  - name: s3-mcp
+    version: "1.0.0"
+    repository: "file://../s3-mcp"
+    condition: s3-mcp.enabled
+  - name: filesystem-mcp
+    version: "1.0.0"
+    repository: "file://../filesystem-mcp"
+    condition: filesystem-mcp.enabled
+  - name: puppeteer-mcp
+    version: "1.0.0"
+    repository: "file://../puppeteer-mcp"
+    condition: puppeteer-mcp.enabled
+  - name: fetch-mcp
+    version: "1.0.0"
+    repository: "file://../fetch-mcp"
+    condition: fetch-mcp.enabled
+  - name: memory-mcp
+    version: "1.0.0"
+    repository: "file://../memory-mcp"
+    condition: memory-mcp.enabled
+  - name: gitea-mcp
+    version: "1.0.0"
+    repository: "file://../gitea-mcp"
+    condition: gitea-mcp.enabled