Refactoring: extract root package configuration reader to separate class

[vjik]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	❌

This is preparing to #146

[what-the-diff[bot]]

PR Summary

• Refactoring of Root Package Configuration Reader The former root package configuration reader has been enhanced and migrated to an individual class, leading to an optimized and more manageable code structure.
• Addition of src/Composer/RootConfiguration.php A new file named RootConfiguration.php is introduced in the src/Composer directory, contributing to the project's functionality.
• Renaming Updated File The Options.php file in the src/Composer directory has been renamed to src/Composer/Options.php, making its purpose clearer.
• Removal of Redundant Code Unused use statements in files like src/Composer/MergePlanProcess.php and src/Config.php have been removed. This action improves the cleanliness of the codebase, reduces any possible confusion, and enhances maintainability.
• Refactoring Options-related Code in src/Composer/ProcessHelper.php To promote efficiency and readability, the options-related code in the src/Composer/ProcessHelper.php file has been refactored.
• Addition of New Import types New import types have been included in multiple src and tests files, like src/Composer/ProcessHelper.php, src/Config.php, src/ConfigPaths.php, tests/Integration/IntegrationTestCase.php, and so on. These additions broaden the scope of what the project can achieve by importing new types from other modules or packages. They also improve code modularity and reusability.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (956eb22) to head (17b023b).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #172 +/- ## =========================================== Coverage 100.00% 100.00% - Complexity 277 283 +6 =========================================== Files 22 23 +1 Lines 725 738 +13 =========================================== + Hits 725 738 +13 ```

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