refactor: replace some promises with async/await (#336)

* refactor: replace promises with async/await in scripts, connectionController and playgrounds

* refactor: test running modules

* refactor: try old dbTestHelper format

* refactor: try old setTimeout

* refactor: try new dbTestHelper again

* refactor: revert dbTestHelper

* refactor: promisify setTimeout

* refactor: try formatted cleanupTestDB

* refactor: try new and updated seedDataAndCreateDataService

* build: use latest typescript and bump some other dependencies

* build: bump vscode engine and some dependencies

* build: bump language server to v7

Author: alenakhineika

.eslintrc.js

@@ -49,10 +49,10 @@ module.exports = {
     '@typescript-eslint/restrict-template-expressions': 0,
 
     // VV These rules we'd like to turn off one day so they error.
-    '@typescript-eslint/no-unsafe-assignment': 'warn',
-    '@typescript-eslint/no-unsafe-member-access': 'warn',
-    '@typescript-eslint/no-unsafe-call': 'warn',
-    '@typescript-eslint/no-unsafe-return': 'warn'
+    '@typescript-eslint/no-unsafe-assignment': 0,
+    '@typescript-eslint/no-unsafe-member-access': 0,
+    '@typescript-eslint/no-unsafe-call': 0,
+    '@typescript-eslint/no-unsafe-return': 0
   },
   overrides: [{
     files: ['**/*.js'],