* First draft of UWP rework.

* Read desc

- Moved UWP specific functions to uwp_events.h
- Removed BaseApp.
- Implemented example UWP lifecycle.

* Added GIF recording and screenshot support.

* Character inputs and filesystem stuff

* Fix game closing on Xbox when B is pressed.

* Fix the gamepad binding hack

* Add as many keys as I believe are possible.

* Implemented mouse locking of a sort.

* Remove rogue todo, the rest are for a game dev using this example.

* Implemented touch how I "think" it should work. I cant test this.

* Review.

- To support ASYNCIFY instead of EMTERPRETER
 - No need to generate a standalone toolchain for Android NDK

Optimizations of allocators.
Renamed 'Stack' to 'Arena'.
Replaced certain define constants with an anonymous enum.
Refactored MemPool to no longer require active or deferred defragging.

For uploading a apk to Google Play a minimun of 25 years (9125 days) is needed for the validity of the key.

More info:
https://developer.android.com/studio/publish/app-signing

Make easings.h use powf and sqrtf instead of pow and sqrt.

* Make raymath naming and functions more consistent

* Minor fixes

* Fix examples

* Fix Physac

* New naming rules

* Apply naming to Quaternion functions

* Apply to models.c

* Remove *MulitplyValue / *DivideValue

It makes no sense to have this here...

Move raylib games to another repo. It will reduce repo size for new clones.

I considered also removing the related history with [`git filter-repo`](https://github.com/newren/git-filter-repo) (the current sane alternative to the deprecated `filter-branch`) but it has some implications: It would had made a new repository with distinct history and checksums. If the repo was previously published,
the history of the new one won't have been compatible with the history others have pulled.

* Executable is called game, not main

* Use make not mingw32-make on macOS

* tcc-based vscode project for windows

Signed-off-by: misterpah <misterpah@gmail.com>

* add makefile to support multiple C files

Signed-off-by: misterpah <misterpah@gmail.com>

Actually this function is useless and potentially dangerous, internally, a shallow copy of data was done. Same could be accomplished accesing image.data directly.

To unify with DrawText*() equivalent functions

Now it's blazing fast. It modifies image.data directly.

Previous version could take up to 3-4 seconds to draw a line... now it takes some nanoseconds...

As noted in #539, the symlink check was to support compiling raylib on
VirtualBox vboxfs as no symlinks are supported there.

With me using Linux as daily driver outside VirtualBox now, this 'feature'
is most likely unused by anyone, but still annoys other users (#791).
Just revert it and be done with it. If there are really others building
raylib on vboxfs or a similarly crippled file system under Linux, they
should now step forward when their build breaks.

This reverts commit b8ca51fd01.

- Removed generate_android_toolchain, since version r21 AndroidNDK it's the toolchain
 - Removed external lib native_app_glue, provided by AndroidNDK

Actually, project just adds 50MB of ANGLE libraries not related to raylib.
Also reviewed UWP project to consume ANGLE from the NuGet package.