[EB-168] remove the usages of Guava library

[liubou-masiuk]

No description provided.

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[liubou-masiuk]

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[liubou-masiuk]

recheck

[Copilot]

Pull request overview

This PR removes the project’s remaining Guava dependencies/usages by updating build configuration and replacing Guava-based utilities with JDK/Gson equivalents, including introducing an in-house PackageInfoCache to replace the prior Guava Cache usage in package build info caching.

Changes:

• Removed Guava dependency declarations (root pom.xml, core/pom.xml) and Guava-related documentation in README.md.
• Replaced Guava utilities with alternatives (Gson TypeToken, Collections.singletonMap).
• Introduced PackageInfoCache (+ unit tests) to provide TTL + bounded-size caching without Guava.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
README.md	Updates module structure description; removes Guava-related “Known issues” section.
pom.xml	Removes Guava from dependency management.
core/pom.xml	Removes Guava dependency and stops embedding Guava into the bundle.
core/src/main/java/.../BuildPackageServiceImpl.java	Switches TypeToken import from Guava to Gson.
core/src/main/java/.../BasePackageServiceImpl.java	Replaces Guava Cache initialization with new PackageInfoCache.
core/src/main/java/.../BasePackageService.java	Updates cache-related Javadoc after removing Guava.
core/src/main/java/.../PackageEntriesDatasource.java	Replaces ImmutableMap.of(...) with Collections.singletonMap(...).
core/src/main/java/.../PackageInfoCache.java	Adds custom concurrent bounded TTL cache implementation.
core/src/test/java/.../PackageInfoCacheTest.java	Adds tests for the new cache behavior (TTL, max size, iterators, concurrency).

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[Copilot]

Pull request overview

Copilot reviewed 17 out of 17 changed files in this pull request and generated 1 comment.

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[Copilot]

Pull request overview

Copilot reviewed 17 out of 17 changed files in this pull request and generated 3 comments.

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[one-step-closer]

Can we evict not any entry but the oldest one?

[liubou-masiuk]

We could, but this will introduce some complexity - we don't have something like concurrentLinkedHashMap ootb, so we'll have to track the incertion order manually. We'll have to add more synchronized blocks to basically all main methods. I am just not sure that this is justified, for this case