Added JDT command for getting Java project

Also added a JDT Project cache in the Spring Boot LS

vscode-extensions/commons-vscode/src/classpath.ts

@@ -1,31 +0,0 @@
-'use strict';
-
-
-import * as VSCode from 'vscode';
-import { LanguageClient, RequestType } from 'vscode-languageclient';
-
-export function registerClasspathService(client : LanguageClient) : void {
-    let classpathRequest = new RequestType<ClasspathParams, ClasspathResponse, void, void>("sts/classpath");
-
-    client.onRequest(classpathRequest, async (params: ClasspathParams) => {
-        return await executeClasspathCommand(params.resourceUri);
-    });
-}
-
-async function executeClasspathCommand(resourceUri : string) : Promise<ClasspathResponse> {
-    return <ClasspathResponse> (await VSCode.commands.executeCommand("java.execute.workspaceCommand", "sts.java.resolveClasspath", resourceUri));
-}
-
-interface ClasspathResponse {
-    entries: ClasspathEntry[],
-    defaultOutputFolder : string
-}
-
-interface ClasspathParams {
-    resourceUri: string
-}
-
-interface ClasspathEntry {
-    kind : string,
-    path : string
-}