Allow configuring trusted domains via product.json or flag.

Index: code-server/lib/vscode/src/vs/server/node/serverEnvironmentService.ts
===================================================================
--- code-server.orig/lib/vscode/src/vs/server/node/serverEnvironmentService.ts
+++ code-server/lib/vscode/src/vs/server/node/serverEnvironmentService.ts
@@ -22,6 +22,7 @@ export const serverOptions: OptionDescri
 	'disable-file-uploads': { type: 'boolean' },
 	'disable-getting-started-override': { type: 'boolean' },
 	'locale': { type: 'string' },
+	'link-protection-trusted-domains': { type: 'string[]' },
 
 	/* ----- server setup ----- */
 
@@ -111,6 +112,7 @@ export interface ServerParsedArgs {
 	'disable-file-uploads'?: boolean;
 	'disable-getting-started-override'?: boolean,
 	'locale'?: string
+	'link-protection-trusted-domains'?: string[],
 
 	/* ----- server setup ----- */
 
Index: code-server/lib/vscode/src/vs/server/node/webClientServer.ts
===================================================================
--- code-server.orig/lib/vscode/src/vs/server/node/webClientServer.ts
+++ code-server/lib/vscode/src/vs/server/node/webClientServer.ts
@@ -338,6 +338,14 @@ export class WebClientServer {
 			scopes: [['user:email'], ['repo']]
 		} : undefined;
 
+		const linkProtectionTrustedDomains: string[] = [];
+		if (this._environmentService.args['link-protection-trusted-domains']) {
+			linkProtectionTrustedDomains.push(...this._environmentService.args['link-protection-trusted-domains']);
+		}
+		if (this._productService.linkProtectionTrustedDomains) {
+			linkProtectionTrustedDomains.push(...this._productService.linkProtectionTrustedDomains);
+		}
+
 		const productConfiguration: Partial<Mutable<IProductConfiguration>> = {
 			codeServerVersion: this._productService.codeServerVersion,
 			rootEndpoint: rootBase,
@@ -352,6 +360,7 @@ export class WebClientServer {
 			telemetryEndpoint: this._productService.telemetryEndpoint,
 			embedderIdentifier: 'server-distro',
 			extensionsGallery: this._productService.extensionsGallery,
+			linkProtectionTrustedDomains,
 		};
 
 		const proposedApi = this._environmentService.args['enable-proposed-api'];