Add personal portfolio samples to the sidebar navigation (#38)

* Change absolute links to relative links

* Remove `Professional` cards

Will re-add later.

* Uncomment path to portfolio

* Squashed commit of the following:

commit 2f56a11
Author: Josh Wong <[email protected]>
Date:   Sun May 19 17:10:08 2024 +0900

    Update deploy.yml

commit e03dadf
Merge: 8b5a45d d87caa4
Author: Josh Wong <[email protected]>
Date:   Sun May 19 17:06:45 2024 +0900

    Merge pull request #33 from josh-wong/bitcoin-cash-node-on-raspberry-pi/update-docs

    AUTO: Docs sync - `bitcoin-cash-node-on-raspberry-pi`

commit 8b5a45d
Merge: d6def55 82e636b
Author: Josh Wong <[email protected]>
Date:   Sun May 19 17:06:38 2024 +0900

    Merge pull request #32 from josh-wong/passgen/update-docs

    AUTO: Docs sync - `passgen`

commit d6def55
Merge: 3468bf8 4f2e977
Author: Josh Wong <[email protected]>
Date:   Sun May 19 17:06:30 2024 +0900

    Merge pull request #30 from josh-wong/zune-software-setup/update-docs

    AUTO: Docs sync - `zune-software-setup`

commit d87caa4
Merge: 0e6f2aa a7ab426
Author: Josh Wong <[email protected]>
Date:   Sun May 19 12:39:33 2024 +0900

    Merge branch 'bitcoin-cash-node-on-raspberry-pi/update-docs' of https://github.com/josh-wong/josh-wong.github.io into bitcoin-cash-node-on-raspberry-pi/update-docs

commit a7ab426
Author: josh-wong <[email protected]>
Date:   Sat May 18 07:21:04 2024 +0000

    AUTO: Sync BCHN on Raspberry Pi docs to personal site

commit 82e636b
Author: josh-wong <[email protected]>
Date:   Sat May 18 07:19:34 2024 +0000

    AUTO: Sync passGen docs to personal site

commit 4f2e977
Author: josh-wong <[email protected]>
Date:   Sat May 18 07:18:45 2024 +0000

    AUTO: Sync Zune software setup docs to personal site

commit 0e6f2aa
Author: josh-wong <[email protected]>
Date:   Sat May 18 07:08:07 2024 +0000

    AUTO: Sync BCHN on Raspberry Pi docs to personal site

* Remove file

This file is a duplicate of the same file in the `docs/portfolio` folder.

* Create buttons.tsx

* Squashed commit of the following:

commit c85d843
Author: Josh Wong <[email protected]>
Date:   Sun May 19 20:23:54 2024 +0900

    Delete file

    This file is a duplicate and in the wrong place.

* Add personal samples

* Delete file

These files shouldn't have been added.

* Uncomment `Portfolio` from header

docs/portfolio/index.mdx

@@ -4,10 +4,6 @@ import { CardRowProfessionalProjects, CardRowPersonalProjects } from '/src/compo
 
 The following are some projects that I've worked on.
 
-## Professional portfolio
-
-<CardRowProfessionalProjects />
-
 ## Personal projects
 
 <CardRowPersonalProjects />