Allow overriding vscode language server options

JAVA_HOME and heap can now be overridden by the user from
vscode worspace settings, in a similar way for all our language servers,
by setting XXX.java.home and XXX.java.heap configuration keys.

vscode-extensions/vscode-spring-boot/lib/Main.ts

@@ -26,6 +26,7 @@ export function activate(context: VSCode.ExtensionContext) {
                 VSCode.window.showWarningMessage('JAVA_HOME or PATH environment variable seems to point to a JRE. A JDK is required, hence Boot Hints are unavailable.');
             }
         },
+        workspaceOptions: VSCode.workspace.getConfiguration("spring-boot.ls"),
         clientOptions: {
             documentSelector: [ PROPERTIES_LANGUAGE_ID, YAML_LANGUAGE_ID, JAVA_LANGUAGE_ID ],
             synchronize: {

vscode-extensions/vscode-spring-boot/package.json

@@ -66,7 +66,17 @@
         "boot-java.boot-hints.on": {
           "type": "boolean",
           "default": true,
-          "description": "Enable/Disable Spring running Boot application live hints decorators in the source code"
+          "description": "Enable/Disable Spring running Boot application live hints decorators in Java source code"
+        },
+        "spring-boot.ls.java.home": {
+          "type": ["string", null],
+          "default": null,
+          "description": "Override JAVA_HOME used for launching the spring-boot-language-server JVM process."
+        },
+        "spring-boot.ls.java.heap": {
+          "type": ["string", null],
+          "default": null,
+          "description": "Max JVM heap value, passed via -Xmx argument when launching spring-boot-language-server JVM process."
         }
       }
     },
@@ -94,7 +104,7 @@
     "vsce-package": "vsce package"
   },
   "dependencies": {
-    "@pivotal-tools/commons-vscode": "file:../commons-vscode/pivotal-tools-commons-vscode-0.2.1.tgz",
+    "@pivotal-tools/commons-vscode": "file:../commons-vscode/pivotal-tools-commons-vscode-0.2.2.tgz",
     "vscode-languageclient": "^4.0.0"
   },
   "devDependencies": {