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>

modules/data_extraction/ultimate_extractor.nu

@@ -0,0 +1,27 @@
+#Function to extract archives with different extensions
+export def extract [name:string #name of the archive to extract
+] {
+  let exten = [ [ex com];
+                    ['.tar.bz2' 'tar xjf']
+                    ['.tar.gz' 'tar xzf']
+                    ['.bz2' 'bunzip2']
+                    ['.rar' 'unrar x']
+                    ['.tbz2' 'tar xjf']
+                    ['.tgz' 'tar xzf']
+                    ['.zip' 'unzip']
+                    ['.7z' '/usr/bin/7z x']
+                    ['.deb' 'ar x']
+                    ['.tar.xz' 'tar xvf']
+                    ['.tar.zst' 'tar xvf']
+                    ['.tar' 'tar xvf']
+                    ['.gz' 'gunzip']
+                    ['.Z' 'uncompress']
+                    ]
+
+  let command = ($exten|where $name =~ $it.ex|first)
+  if ($command|is-empty) {
+    echo 'Error! Unsupported file extension'
+  } else {
+    nu -c ($command.com + ' ' + $name)
+  }
+}