chore: add hostname option to extension (#177)

src/config/config.ts

@@ -70,6 +70,8 @@ export interface Config {
    * Url to which to send the heartbeat
    */
   heartbeatApiUrl: string;
+
+  hostname: string;
   /**
    * Is logging enabled
    */
@@ -134,6 +136,8 @@ const config: Config = {
   heartbeatApiUrl:
     process.env.HEART_BEAT_API_URL ?? 'https://wakatime.com/api/v1/users/current/heartbeats',
 
+  hostname: '',
+
   loggingEnabled: true,
 
   loggingStyle: 'blacklist',