Use user classpath and Spring Boot in utbot-spring-analyzer

[EgorkaKulikov]

Description

Full cycle support of Spring bean definitions analysis in UtBot.

How to test

Manual tests

Unit testing for Spring can be tested in modes different from NoConfiguration in UtBot after this PR merge.

Self-check list

• I've set the proper labels for my PR (at least, for category and component).
• PR title and description are clear and intelligible.
• I've added enough comments to my code, particularly in hard-to-understand areas.
• The functionality I've repaired, changed or added is covered with automated tests.
• Manual tests have been provided optionally.
• The documentation for the functionality I've been working on is up-to-date.