Fix broken categories in pxtToolbox

[THEb0nny]

I created a fix for pxtToolbox which breaks when adding some extensions. This bug appeared during the first beta version. I have attached a video of how this happens.
I actually don't understand why this leads to such a bug and why my solution works.

But adding custom.ts solved the bug. I don't know why this happens either.

Another observation worth noting is that the extensions that come from github do not break the categories in pxtToolbox.

2024-02-07_00-24-41.mp4

[THEb0nny]

I tried moving the namespace attributes into my libraries and it worked. To be honest I don't know why this works.
But this doesn't work for namespace brick. I don't understand, it's not logical.
Namespace console is also in lib ev3, because the file is there, there is no bug for it.

2024-02-07_00-30-43.mp4

[THEb0nny]

I have corrected the Brick category as follows.
I noticed that the namespace brick is in the files of another core library. Accordingly, I thought that because of this the category was being redefined and breaking. I moved the category attributes to ns.ts of the core library. This solved the problem.

I also thought that maybe I should move the files with the namespace brick from the core to the ev3 library. But this breaks the build, even though I specified the dependencies.

2024-02-07_13-33-55.mp4

[THEb0nny]

@jwunderl hi, can you see the change?

[THEb0nny]

@abchatra a pls review is needed here