Add Firewalla MCP Server (github#109)

* Add Firewalla MCP Server

- Real-time network monitoring and security analysis
- 28 specialized tools for firewall management
- Access security alerts, network flows, and device status
- MIT licensed with Docker image ready

* fix: standardize parameter references in server.yaml

- Changed '{{firewalla.msp_id}}' to '{{msp_id}}'
- Changed '{{firewalla.box_id}}' to '{{box_id}}'
- This aligns with the parameter names defined in the parameters section

* fix: update server.yaml to pass all validation checks

- Change secret name from 'firewalla.msp_token' to 'firewalla-mcp-server.msp_token'
- Fix parameter references: {{firewalla.msp_id}} to {{msp_id}}, {{firewalla.box_id}} to {{box_id}}
- Update parameters schema from array to object format with properties
- All docker/mcp-registry validation checks now pass

Author: amittell

servers/firewalla-mcp-server/server.yaml

@@ -0,0 +1,59 @@
+name: firewalla-mcp-server
+image: mcp/firewalla-mcp-server
+type: server
+meta:
+  category: security
+  tags:
+    - firewall
+    - security
+    - monitoring
+    - network
+    - threat-detection
+about:
+  title: Firewalla MCP Server
+  description: Real-time network monitoring, security analysis, and firewall management through 28 specialized tools. Access security alerts, network flows, device status, and firewall rules directly from your Firewalla device.
+  icon: https://avatars.githubusercontent.com/u/16805913?s=200&v=4
+source:
+  project: https://github.com/amittell/firewalla-mcp-server
+config:
+  description: Configure your Firewalla MSP connection credentials
+  secrets:
+    - name: firewalla-mcp-server.msp_token
+      env: FIREWALLA_MSP_TOKEN
+      example: your_msp_access_token_here
+  parameters:
+    type: object
+    properties:
+      msp_id:
+        type: string
+        description: Your Firewalla MSP domain (e.g., yourdomain.firewalla.net)
+        example: yourdomain.firewalla.net
+      box_id:
+        type: string
+        description: Your Firewalla Box Global ID
+        example: 1eb71e38-3a95-4371-8903-ace24c83ab49
+  env:
+    - name: FIREWALLA_MSP_ID
+      example: yourdomain.firewalla.net
+      value: '{{msp_id}}'
+    - name: FIREWALLA_BOX_ID
+      example: 1eb71e38-3a95-4371-8903-ace24c83ab49
+      value: '{{box_id}}'
+    - name: MCP_WAVE0_ENABLED
+      value: 'true'
+    - name: MCP_READ_ONLY_MODE
+      value: 'false'
+    - name: MCP_CACHE_ENABLED
+      value: 'true'
+    - name: MCP_DEBUG_MODE
+      value: 'false'
+    - name: NODE_ENV
+      value: 'production'
+    - name: LOG_LEVEL
+      value: 'info'
+    - name: MCP_CACHE_TTL
+      value: '300'
+    - name: MCP_RATE_LIMIT_WINDOW
+      value: '60000'
+    - name: MCP_RATE_LIMIT_MAX_REQUESTS
+      value: '100'