[Zig 0.16.X+] fix SDL3 example for Zig 0.16.X and add panic handling …

…back in (no stack trace support) (#69)

- fix SDL3 example for Zig 0.16.X
- add panic handling back in (no stack trace support) for Zig 0.16.X

Fixes #68

Update Asset directory functionality to recursively search the direct…

…ory and call apk.addFileInput for each file (#63)

Update Asset directory functionality to recursively search the directory
and call apk.addFileInput for each file

Fixes #62

update various code sites to handle Zig 0.16.x (#57)

- add various fixes to support Zig 0.16.0-dev.2040+c475f1fcd
- add `b.graph.io` parameter to various file handling operations if
building with Zig 0.16.X or higher.
- no longer supporting custom panic handler if building with Zig
0.16.x-dev or higher.
- Linux: add automatic detection of Android Studio so it's
jarsigner/java/etc binaries can be utilized.
- Windows: remove deprecated Android Studio registry check logic

improve C++ include support so that openxr_loader will build for Andr…

…oid with Zig (#55)

improve C++ header include support so that openxr_loader will at least build for Android with Zig