feature: Add README for doom-emacs config

emacs/doom-emacs/README.md

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+# Doom-Emacs configuration
+
+# Quick setup
+
+1. Copy those files in the `~/.doom.d` folder
+2. Adjust `init.el` file with your preferences
+3. Add/ Remove `hooks` from `config.el`
+4. Follow [doom-emacs install](https://github.com/hlissner/doom-emacs#install)
+
+# Tips
+
+* every time you change your `init.el` file, run `~/.emacs.d/bin/doom sync`
+* to check missing modules, packages or dependencies use `~/.emacs.d/bin/doom doctor` and follow specific instructions
+
+## Our config
+
+### Languages
+
+* Common LISP
+* Emacs LISP
+* Go
+* Haskell
+* JSON
+* Javascript
+* Markdown
+* PHP
+* Python
+* Ruby
+* Rust
+* Sh
+* Web (Generic module)
+* Yaml
+
+### Other packages
+
+* LSP + Company -> autocompletion
+* iBuffer -> buffer management
+* docker -> docker commands and shortcuts
+* magit
+* workspace -> project isolated spaces