Add cache with FIFO replacement policy

[KevinMwita7]

Description

This PR adds a reusable FIFOCache implementation with the following features:

• Fixed size FIFO eviction policy using LinkedHashMap
• Time to live (TTL)
• Thread-safe operations using ReentrantLock
• Pluggable EvictionStrategy to control expired entry cleanup
• Eviction listener callback support for observing removals
• Hit and miss statistics tracking
• Builder for flexible configuration

Checklist

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized it.
• All filenames are in PascalCase.
• All functions and variable names follow Java naming conventions.
• All new algorithms have a URL in their comments that points to Wikipedia or other similar explanations.
• All new code is formatted with clang-format -i --style=file path/to/your/file.java

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 94.52055% with 8 lines in your changes missing coverage. Please review.

Project coverage is 74.48%. Comparing base (712ada5) to head (cd4a4f3).

Files with missing lines	Patch %	Lines
...thealgorithms/datastructures/caches/FIFOCache.java	94.52%	2 Missing and 6 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6337      +/-   ##
============================================
+ Coverage     74.33%   74.48%   +0.15%     
- Complexity     5392     5423      +31     
============================================
  Files           679      680       +1     
  Lines         18820    18966     +146     
  Branches       3646     3670      +24     
============================================
+ Hits          13990    14127     +137     
- Misses         4274     4276       +2     
- Partials        556      563       +7     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.