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/github/merged-branches/merged-branches.nu

@@ -0,0 +1,15 @@
+#!/usr/bin/env nu
+gh api $"orgs/($env.OWNER)/repos"
+|from json
+|each {|repo|
+    gh api $"repos/($env.OWNER)/($repo.name)/pulls?state=closed"
+    |from json
+    |if ($in|length) > 0 {
+        each {|pull|
+            print $"Removing branch ($pull.head.ref) from repo ($repo.name)"
+            gh api -X DELETE $"repos/($env.OWNER)/($repo.name)/git/refs/heads/($pull.head.ref)"
+        }
+    } else {
+        print $"Repo ($repo.name) has no branches to delete"
+    }
+}