Merge branch 'topic/dotenv' into 'master'

Use a .env file in VS Code testing when available

See merge request eng/ide/ada_language_server!1675

Author: eliericha

integration/vscode/ada/.gitignore

@@ -13,3 +13,6 @@
 /linux/
 /win32/
 /darwin/
+
+# Generated by ANCR
+/.env

integration/vscode/ada/.vscode-test.mjs

@@ -2,6 +2,10 @@ import { defineConfig } from '@vscode/test-cli';
 import { mkdtempSync } from 'fs';
 import * as os from 'os';
 import { join } from 'path';
+import * as dotenv from 'dotenv';
+
+dotenv.config({ override: true });
+// console.log(process.env);
 
 let baseMochaOptions = {
     ui: 'tdd',