add basic template

templates/java/main.tf

@@ -41,6 +41,16 @@ module "java_workspace" {
   EOT
 
   vscode_extensions = [
+    "christian-kohler.path-intellisense",
+    "editorconfig.editorconfig",
+    "yzhang.markdown-all-in-one",
+    "usernamehw.errorlens",
+    "wayou.vscode-todo-highlight",
+    "oderwat.indent-rainbow",
+    "ms-azuretools.vscode-docker",
+    "redhat.vscode-yaml",
+    "mikestead.dotenv",
+
     "vscjava.vscode-java-pack",
     "redhat.java",
     "vscjava.vscode-java-debug",