rewrite: slimmer, trimmer and more lazy kickstart.nvim (nvim-lua#635)

We've removed over 1/3 of the code that was in kickstart previously,
and more than doubled the amount of comments explaining every line
of code (to the best of my ability).

kickstart now properly uses many of the lazy.nvim config and loading
idioms, which should be really helpful for people moving both to
modular configs, as well as extending the kickstart config in one file.

Additional features:
- Beautiful ascii art
- Added some documentation that explains what is an LSP, what is telescope, etc
- There is now a `:checkhealth` for kickstart, which checks some basic information
  and adds useful information for maintainers (for people cloning the repo).
- Improved LSP configuration and tool installation, for easier first time startup
- Changed init.lua ordering, so that it moves from simple options to complicated config

```
-------------------------------------------------------------------------------
Language                     files          blank        comment           code
-------------------------------------------------------------------------------
Lua                              1            108            404            298
-------------------------------------------------------------------------------
```

README.md

@@ -21,14 +21,14 @@ If you are experiencing issues, please make sure you have the latest versions.
 
 ### Install External Dependencies
 
+### Install External Dependencies
+
 > **NOTE**
 > [Backup](#FAQ) your previous configuration (if any exists)
 
 External Requirements:
 - Basic utils: `git`, `make`, `unzip`, C Compiler (`gcc`)
 - [ripgrep](https://github.com/BurntSushi/ripgrep#installation)
-- A [Nerd Font](https://www.nerdfonts.com/): optional, provides various icons
-  - if you have it set `vim.g.have_nerd_font` in `init.lua` to true
 - Language Setup:
   - If want to write Typescript, you need `npm`
   - If want to write Golang, you will need `go`
@@ -89,21 +89,21 @@ information about extending and exploring Neovim.
 
 ### Getting Started
 
-[The Only Video You Need to Get Started with Neovim](https://youtu.be/m8C0Cq9Uv9o)
+See [Effective Neovim: Instant IDE](https://youtu.be/stqUbv-5u2s), covering the
+previous version. Note: The install via init.lua is outdated, please follow the
+install instructions in this file instead. An updated video is coming soon.
 
 ### Recommended Steps
 
 [Fork](https://docs.github.com/en/get-started/quickstart/fork-a-repo) this repo
-(so that you have your own copy that you can modify) and then install. You
-can install it on your machine using the methods above.
+(so that you have your own copy that you can modify) and then installing you
+can install to your machine using the methods above.
 
 > **NOTE**
 > Your fork's url will be something like this: `https://github.com/<your_github_username>/kickstart.nvim.git`
 
 #### Examples of adding popularly requested plugins
 
-NOTE: You'll need to uncomment the line in the init.lua that turns on loading custom plugins.
-
 <details>
   <summary>Adding autopairs</summary>
 
@@ -135,7 +135,7 @@ return {
 <details>
   <summary>Adding a file tree plugin</summary>
 
-This will install the tree plugin and add the command `:Neotree` for you. For more information, see the documentation at [neo-tree.nvim](https://github.com/nvim-neo-tree/neo-tree.nvim).
+This will install the tree plugin and add the command `:Neotree` for you. You can explore the documentation at [neo-tree.nvim](https://github.com/nvim-neo-tree/neo-tree.nvim) for more information.
 
 In the file: `lua/custom/plugins/filetree.lua`, add:
 
@@ -195,21 +195,3 @@ This requires:
 ```lua
 {'nvim-telescope/telescope-fzf-native.nvim', build = 'cmake -S. -Bbuild -DCMAKE_BUILD_TYPE=Release && cmake --build build --config Release && cmake --install build --prefix build' }
 ```
-
-Alternatively, one can install gcc and make which don't require changing the config,
-the easiest way is to use choco:
-
-1. install [chocolatey](https://chocolatey.org/install)
-either follow the instructions on the page or use winget,
-run in cmd as **admin**:
-```
-winget install --accept-source-agreements chocolatey.chocolatey
-```
-
-2. install all requirements using choco, exit previous cmd and
-open a new one so that choco path is set, and run in cmd as **admin**:
-```
-choco install -y neovim git ripgrep wget fd unzip gzip mingw make
-```
-
-Then, continue with the [Install Kickstart](#Install-Kickstart) step.