Upgrade dependencies, remove unused jest and benchmarking packages, upgrade to new node version, remove garbage files

Author: StefanH-AT

.gitignore

@@ -11,9 +11,3 @@ out
 
 # Typescript build garbage
 tsconfig.tsbuildinfo
-
-# Jest coverage results
-coverage
-
-# Jest-bench results
-benchmarks

README.md

@@ -1,22 +1,18 @@
 
-# Source Engine Support for Vscode
+# Source Engine Support for Visual Studio Code
 
 [![CI Test](https://github.com/StefanH-AT/Source-Engine-VSCode-Extension/actions/workflows/test.yml/badge.svg)](https://github.com/StefanH-AT/Source-Engine-VSCode-Extension/actions/workflows/test.yml)
-[![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](https://github.com/dwyl/esta/issues)
 ![Release](https://img.shields.io/github/release/StefanH-AT/Source-Engine-VSCode-Extension.svg)
 
-![VSCODE](https://img.shields.io/badge/Visual_Studio_Code-0078D4?style=&logo=visual%20studio%20code&logoColor=white)
-![ESLINT](https://img.shields.io/badge/eslint-3A33D1?style=flat&logo=eslint&logoColor=white)
-![TYPESCRIPT](https://img.shields.io/badge/TypeScript-007ACC?style=flat&logo=typescript&logoColor=white)
-![NODE.JS](https://img.shields.io/badge/Node.js-43853D?style=flat&logo=node.js&logoColor=white)
 
 <a href="https://github.com/StefanH-AT/Source-Engine-VSCode-Extension/graphs/contributors">
 <img src="https://contrib.rocks/image?repo=StefanH-AT/Source-Engine-VSCode-Extension" height="24"/>
 </a>
 
-[Visual Studio Marketplace](https://marketplace.visualstudio.com/items?itemName=stefan-h-at.source-engine-support) -
-[OpenVSX Registry](https://open-vsx.org/extension/stefan-h-at/source-engine-support)
+---
 
+[Visual Studio Marketplace](https://marketplace.visualstudio.com/items?itemName=stefan-h-at.source-engine-support) -
+[OpenVSX Registry](https://open-vsx.org/extension/stefan-h-at/source-engine-support) -
 [Discord](https://discord.gg/BDDxkNwXWw) - 
 [Bugs](https://github.com/StefanH-AT/Source-Engine-VSCode-Extension)
 
@@ -145,12 +141,6 @@ Users can just install this extension on the VSCode Marketplace, but developers
 3) Clone the repository
 4) Run `npm install` in the repository's folder, to install the dependencies
 
-### Testing
-To start the unit tests, run `npm run test`. The project will be automatically compiled.
-
-### Benchmarking
-To run the benchmark tests, run `npm run benchmark`. The project will be automatically compiled
-
 ### Running the extension
 1) To start the extension, first compile the project `npm run build` (Or `npm run watch` to auto-compile on every file change)
 2) Open the repository in VSCode