Add big endian machine to CI

[Rot127]

Feature

• [ ] New architecture module
• [ ] Support for processor extension
• [ ] Add more instruction details (elaborated below)
• [ ] Binding support for: language
• [x] Other (elaborated below)

Describe the feature you'd like

Run cstest compiled for a big endian machine in the CI. So we avoid issues with endianess, which we otherwise have to wait for.

We can compile with a cross-compile toolchain and run them with qemu. Pretty straight forward.

Additional context

Stuff like https://github.com/capstone-engine/capstone/pull/2530 gets annoying.