Sibling folders

[malachib]

Hi, I would like to run my unity tests with both the source lib and the unit test .cpp/.h being in separate sibling folders rather than child folders.

I usually struggle with this.

Specifically a structure like:

• src/estd
• test/unity
• test/arduino/unity

Where platformio.ini and friends are in test/arduino/unity, tests in test/unity and lib source in src/estd
I've resorted to symlinks but it's pretty clunky and makes VSCode go insane

Please observe https://github.com/malachi-iot/estdlib/tree/v0.8.5/test/arduino/unity as a demonstration