Add missing project method for plugins

src/plugins.ts

@@ -40,9 +40,8 @@ export interface PluginCreateInfo {
  * The portion of tsserver's Project API exposed to plugins
  */
 export interface Project {
-    projectService: {
-        logger: Logger
-    }
+    projectService: { logger: Logger }
+    getCurrentDirectory(): string
 }
 
 /**

src/project-manager.ts

@@ -385,7 +385,11 @@ export class ProjectConfiguration {
 
             const info: PluginCreateInfo = {
                 config: configEntry,
-                project: { projectService: { logger: this.logger } }, // TODO: may need more support
+                project: {
+                    // TODO: may need more support
+                    getCurrentDirectory: () => this.getHost().getCurrentDirectory(),
+                    projectService: { logger: this.logger },
+                },
                 languageService: this.getService(),
                 languageServiceHost: this.getHost(),
                 serverHost: {}, // TODO: may need an adapter