refactor: ✨ (#418)

* refactor: ✨ move in one commit

Eveything in modules should probably be changed to `exported` defs.
The idea is to move everything first to keep proper history.

* refactor: 📝 add modules readme (wip)

* refactor: ✨ small move

* refactor: 📝 changed nestring, updated modules readme

* refactor: 📝 to document or not to document

* fix: 🐛 themes

replaced the template to use `main` and regenerated them
from lemnos themes.

* Revert "fix: 🐛 themes"

This reverts commit 4918d3633c8d2d81950a0ed0cfd9eb84241bc886.

* refactor: ✨ introduce sourced

- Created a source `root` in which sourcable demos are stored.
  Some might get converted to modules later on.
- Moved some files to bin too.

* fix: 🐛 fehbg.nu

* fix: 🐛 modules/after.nu

* moved some other stuff around

---------

Co-authored-by: Darren Schroeder <343840+fdncred@users.noreply.github.com>

sourced/TODO.md

@@ -0,0 +1,59 @@
+# todo
+
+These two commands can be used to make simple todo-lists that
+are printed to the screen at terminal startup. They are currently
+only implemented for [alacritty], for other terminals consult
+your terminal documentation or find a work around
+
+## SETUP: 
+- Create a file called `todo.nu` and place the `printer` command,
+  calling it at the end.
+- In your `alacritty.yml`, add this
+  ```yml
+  shell:
+    program: /bin/nu  # path to your `nu` executable
+    args:
+       - -e "nu /path/to/todo.nu"
+  ```
+- Create an empty file called `todo.txt`
+- *Recommended*
+  In your `env.nu`, add an environment variable pointing to the `todo.txt`. Example:
+  ```nu
+  let-env TODO = ($nu.config-path | path dirname | path join 'scripts/todo.txt')
+  ```
+- Source the `todo` command in your `config.nu`. Example
+  ```nu
+  source './scripts/todo.nu'
+  ```
+## USAGE:
+- On terminal startup, the printer command is run by `nu` and the
+  list is printed to the screen. If the list is empty, a message
+  indicating so is printed.
+
+- To add items, 
+  ```nu
+  todo -a "finish writing docs"
+  ```
+
+- To remove an item
+  ```nu 
+  # this prints the list(numbered)
+  todo
+  # the index of the item you want to remove 
+  # (starts at 1 but can be changed to start at 0)
+  todo -r 4
+  ```
+
+- To clear the whole list
+  ```nu
+  todo -c
+  ```
+
+- To manually edit the list
+  ```
+  # this opens an editor with the file opened
+  todo -e
+  ```
+
+
+[alacritty]: github.com/alacritty/alacritty