feat: migrate docs from Nextra to Fumadocs (#606)

* feat: checkpoint

* feat: Migrate docs to Fumadocs

* chore: docs layout

* chore:
- remove home route
- make docs home route
- remove docs prefix

* chore: docs layout

* chore:
- reorder sidebar
- fix home page redirect

* chore: rename package to avoid error during pnpm clean

* chore: remove private and sideEffects properties from package.json

* chore: requested fixes

* feat: update fumadocs layout

* feat: hide theme switch on sidebar

* add /docs

* feat: enhance documentation and layout with new guides and updates

- Added multiple how-to guides for creating courses, exercises, and managing organization settings.
- Updated existing documentation for clarity and consistency, including renaming sections for better navigation.
- Introduced new assets such as logos and favicon for improved branding.
- Modified layout components to enhance user experience and visual appeal.
- Updated package dependencies to include lucide-react for icon usage.

* chore: update pnpm-lock.yaml with dependency version changes

* add favicon

* fix: update links in documentation for consistency

- Corrected the links in the create-exercise and signup guides to ensure they point to the correct paths, enhancing clarity and navigation for users.

* delete docs

---------

Co-authored-by: Rotimi Best <best@classroomio.com>

apps/docs/README.md

@@ -1,31 +0,0 @@
-# ClassroomIO Documentation
-
-The help docs of classroomio in Next.js live on [https://classroomio.com/docs](https://classroomio.com/docs)
-
-## Development
-
-### Local setup
-
-1. Clone the repo
-
-   ```bash
-   git clone https://github.com/rotimi-best/classroomio.git
-   ```
-
-2. Go to project folder
-
-   ```bash
-   cd classroomio
-   ```
-
-3. Install the required dependencies
-
-   ```bash
-   pnpm i
-   ```
-
-4. Run (in development mode)
-
-   ```bash
-   pnpm dev --filter=docs
-   ```