explain why an eslint rule is disabled; see #101978

src/vs/platform/sign/node/signService.ts

@@ -6,6 +6,7 @@
 import { ISignService } from 'vs/platform/sign/common/sign';
 
 declare module vsda {
+	// the signer is a native module that for historical reasons uses a lower case class name
 	// eslint-disable-next-line @typescript-eslint/naming-convention
 	export class signer {
 		sign(arg: any): any;