install proton-mail-mcp on VS Code

Requires the runtime declared in the upstream repo — check the README before running. VS Code (Copilot) uses a `servers` root key with an explicit `type` field — different from the `mcpServers` shape used by Claude Desktop and Cursor. Paste the config below, then follow the reload step to register proton-mail-mcp.

{
  "servers": {
    "protonmail": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "proton-mail-mcp"
      ],
      "env": {
        "PROTONMAIL_USERNAME": "your-email@protonmail.com",
        "PROTONMAIL_PASSWORD": "your-smtp-password"
      }
    }
  }
}