feat: add console output file option for debugging and monitoring

Add comprehensive console logging to file functionality:
- CLI option --console-output-file to specify output file path
- Environment variable PLAYWRIGHT_MCP_CONSOLE_OUTPUT_FILE support
- Session configuration via browser_configure_snapshots tool
- Real-time structured logging with timestamp, session ID, and URL
- Automatic directory creation and graceful error handling
- Captures all console message types (log, error, warn, page errors)

Useful for debugging browser interactions and monitoring console activity
during automated sessions.

src/context.ts

@@ -641,6 +641,7 @@ export class Context {
     includeSnapshots?: boolean;
     maxSnapshotTokens?: number;
     differentialSnapshots?: boolean;
+    consoleOutputFile?: string;
   }): void {
     // Update configuration at runtime
     if (updates.includeSnapshots !== undefined)
@@ -659,5 +660,9 @@ export class Context {
         this.resetDifferentialSnapshot();
 
     }
+
+    if (updates.consoleOutputFile !== undefined)
+      (this.config as any).consoleOutputFile = updates.consoleOutputFile === '' ? undefined : updates.consoleOutputFile;
+
   }
 }