Android Studio fixes (#634, #635)

[nikitavlaev]

Description

Multiple test modules supported.
Removed unused jdkVersion from model, added for convenience to JdkPathService.
Removed unnecessary classpath modification parts for Android.

Fixes #634, #635

Type of Change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• Refactoring (typos and non-functional changes)

How Has This Been Tested?

Automated Testing

Not applicable.

Manual Scenario

1. Launch Android Studio
2. Install plugin
3. Generate tests for any samples, everything generates without errors.

Checklist (remove irrelevant options):

• The change followed the style guidelines of the UTBot project
• Self-review of the code is passed
• The change contains enough commentaries, particularly in hard-to-understand areas
• New documentation is provided or existed one is altered
• No new warnings
• New tests have been added
• All tests pass locally with my changes

[alisevych]

Testing results

I've published the plugin as an archive, installed it on IDEA 2022.1.4 and checked how it works on different projects.
Checked Gradle + JDK 8, Maven + JDK 11, Maven + JDK 13 (checked error from UTBot and changed to JDK 11), IntelliJ + JDK 8.
Checked test generation into correct packages structure.
Checked test generation to a new test source root (Maven, IntelliJ). Blocked for Gradle if test root/roots is/are configured.
Checked test generation when there are several test roots in a project.

The following issue found:

Steps to reproduce:

1. Create Gradle/Maven/IntelliJ project with JDK 8 / 11
2. Add some classes to the source root
3. Remove all Test source root (or unmark folders as Test source roots)
4. Open UTBot dialog to Create tests

Expected result:

/src/test/utbot-tests is suggested to create as Test sources root

Actual result:

There is test "set test root" in the Test sources root, user needs to manually create the folder and mark it.
In Gradle project - button to manually select/create folders is disabled - so this issue can't be resolved from UTBot dialog.