Create custom GitHub action for cross compile build

[zehnm]

Expected Behavior or Design

We are using GitHub actions to automatically cross compile a project after each push. The cross compile build is using the YIO Buildroot toolchain on Linux. The generic setup & build must be reusable for every Qt integration project.

Current Behavior or Design

The build setup is copy pasted in every YIO project requiring a Qt cross compile build.

Possible Solution

Create a custom GitHub action using Docker.

Detailed Description and Additional Information

Move the build setup and execution now currently found in build_crosscompile.yml to a GitHub action within a Docker container.

[zehnm]

Initial GitHub action is ready: zehnm/yio-crosscompile-action@master