Function detectAdapter

detectAdapter(path: string): CaddyAdapter
Detect the appropriate adapter based on file extension
Parameters
- path: string
  Path to the configuration file
Returns CaddyAdapter
The detected adapter type
Example
```
detectAdapter("./config.json");     // "json"
detectAdapter("./config.yaml");     // "yaml"
detectAdapter("./Caddyfile");       // "caddyfile"
detectAdapter("./unknown.txt");     // "caddyfile" (default)
```
- Defined in src/caddy/config-loader.ts:54