Refactor Parallel_Reduce and optimize reduction operations

[A-006]

PR Description:
This PR introduces changes to the Parallel_Reduce namespace to standardize reduction operations across the codebase.

Key Changes:

• Refactoring: Updated reduce_all and reduce_pool interfaces in parallel_reduce.cpp and parallel_reduce.h to support more types and consistent templating.
• Usage Updates: Adjusted reduce_max and reduce_min calls in sto_iter.cpp and sto_tool.cpp to properly handle value references (fixing pointer dereferencing issues).
• Optimization: Improved reduce_double_allpool implementation to perform in-place MPI reduction, avoiding auxiliary vector allocation.
• Test Fixes: Updated depend_mock files in source_basis/module_pw/test to include missing reduce_min_pool mock definitions, fixing pw_test link errors.
• Compilation Fixes: Resolved various compilation issues in module_charge, module_pwdft, and module_stodft related to the interface changes.