UI. Gradle project. Suggest all Test sources roots for test generation

[alisevych]

Description

In Gradle projects test sources root can be located anywhere. Suggest all found test source roots for test generation.

Expected behavior

In Gradle project Test sources root can be located anywhere, it can be configured in build.gradle file.
So we'll need to be able to generate tests to a directory located outside src.

Environment

Checked on IDEA Ultimate 2022.1.3
Gradle 6.3, 7.4

Potential alternatives

Current behavior forbids destination folder outside /src/test

Context

For example: https://github.com/volivan239/virt-mem-personal/blob/main/build.gradle
Now integrationTest directory can't be selected as destination folder:

[alisevych]

@Vassiliy-Kudryashov Please have a look at the referenced project:
https://github.com/volivan239/virt-mem-personal
There is a source root in the root - and it is not found by UTBot