Add Table of Contents in README

Author: xlxs4

README.md

@@ -1,7 +1,19 @@
 <details>
 <summary>Click to expand</summary>
 
-[[_TOC_]]
+- [TL;DR](#tldr)
+- [Installing/Building](#installingbuilding)
+ - [Packages](#packages)
+ - [Docker](#docker)
+ - [Arch Linux](#arch-linux)
+ - [get-docker](#get-docker)
+ - [Development](#development)
+ - [Manual](#manual)
+- [Fuzzing](#fuzzing)
+ - [Risks](#risks)
+ - [Introduction](#introduction)
+- [Using](#using)
+- [Gallery](#gallery)
 
 </details>