minor #748 Move RST documentation to /docs (OskarStark)

This PR was squashed before being merged into the main branch.

Discussion
----------

Move RST documentation to `/docs`

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Docs?         | yes
| Issues        | --
| License       | MIT

Restructured documentation by moving all RST files from component-specific doc/ directories to a centralized /docs/ directory. Organized documentation into bundles/ and components/ subdirectories for better discoverability.

Commits
-------

9b95df1 Move RST documentation to `/docs`

Author: OskarStark

.github/workflows/doctor-rst.yaml

@@ -4,11 +4,11 @@ on:
     push:
         paths:
             - '**.rst'
-            - 'src/*/doc/**'
+            - 'docs/**'
     pull_request:
         paths:
             - '**.rst'
-            - 'src/*/doc/**'
+            - 'docs/**'
 
 jobs:
     doctor-rst: