cmake build command failed - alvr_binding.h: No such file or directory

### Issue

`cmake --build .` command failed - `alvr_binding.h: No such file or directory`

### Steps taken

Folders:

| name | branch | commit
| -- | -- | --
| [`alvr-monado`](https://github.com/alvr-org/ALVR) | `monado` | `7955f8bd06cc2b8070f6a1dad64cbc05c77c7a51`
| [`alvr_render`](https://github.com/The-personified-devil/alvr_render) | `master` | `c1a07dfeb4d6bccc68ff5bb0fbdd8cbb75a62936`
| `Monado-ALVR` | `main` | f9ac79186a62f7aad8af3365ef6d77ec959f7ed7

Error message

```
[ 1%] Built target xrt-external-catch2
[ 2%] Built target xrt-external-nanopb
[ 4%] Built target xrt-external-imgui
[ 5%] Built target xrt-external-imgui-sdl2
[ 5%] Built target aux_os
[ 6%] Built target aux_generated_bindings
[ 15%] Built target aux_util
[ 18%] Built target aux_math
[ 19%] Built target aux_ogl
[ 20%] Built target aux_os_ble
[ 21%] Built target aux_gstreamer
[ 23%] Built target aux_util_sink
[ 26%] Built target aux_tracking
[ 27%] Built target aux_vive
[ 28%] Built target drv_remote
[ 32%] Built target st_gui
[ 33%] Built target drv_qwerty
[ 34%] Built target aux_util_debug_gui
[ 34%] Built target aux_util_process
[ 37%] Built target aux_vk
[ 37%] Building CXX object src/xrt/drivers/alvr_render2/CMakeFiles/AlvrRender.dir/src/alvr_server/NalParsing.cpp.o
/home/username/Downloads/alvr_render/src/alvr_server/NalParsing.cpp:4:10: fatal error: alvr_binding.h: No such file or directory
4 | #include "alvr_binding.h"
| ^~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [src/xrt/drivers/alvr_render2/CMakeFiles/AlvrRender.dir/build.make:163: src/xrt/drivers/alvr_render2/CMakeFiles/AlvrRender.dir/src/alvr_server/NalParsing.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:3621: src/xrt/drivers/alvr_render2/CMakeFiles/AlvrRender.dir/all] Error 2
make: *** [Makefile:146: all] Error 2
```

Command history:

```bash
cd alvr-monado
rustup default stable
cargo xtask build-server-lib
cd ../Monado-ALVR
mkdir build
cd build
cmake .. -DCMAKE_BUILD_TYPE=Debug -G "Unix Makefiles"
cmake --build .
```

### Distribution
6.12.1-arch1-1

cmake version 3.31.1
python 3.12.7