Add CMakeList.txt for linux build

[beniaminopozzan]

Amazing work @alireza787b . I use X-Plane on Ubuntu, it would be great to have the possibility to build the plugin on linux.

[Jamil]

+1! This looks great, and appreciate all the work @alireza787b - would be great to have instructions to build from source on Linux or macOS.

[Jamil]

Makefile for macOS which successfully builds the plugin: #4

Should be similar for Ubuntu as well, though linking would work differently.

[alireza787b]

Makefile for macOS which successfully builds the plugin: #4

Should be similar for Ubuntu as well, though linking would work differently.

Thanks... I will test and merge it today...

[alireza787b]

Amazing work @alireza787b . I use X-Plane on Ubuntu, it would be great to have the possibility to build the plugin on linux.

I created a draft linux make files in the unix_makefile branch. can you please test it and if it works or not?
https://github.com/alireza787b/px4xplane/tree/unix_makefile