[DataMapper] Provide Pool of data mappers

[Yaraslaut]

Closes #432

[Copilot]

Pull request overview

This PR introduces a DataMapper pool feature to provide efficient reuse of DataMapper instances across threads. The implementation supports three growth strategies (UnboundedGrow, BoundedWait, and BoundedOverflow) that can be configured at compile time, along with a global singleton pool accessible via GlobalDataMapperPool().

Changes:

• Adds a template-based Pool class with RAII wrapper PooledDataMapper for automatic resource management
• Implements three configurable growth strategies for different use cases
• Provides CMake configuration options for pool sizing and growth strategy
• Adds comprehensive unit tests covering all strategies and concurrent usage scenarios

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
src/Lightweight/DataMapper/Pool.hpp	Core pool implementation with template-based configuration and strategy pattern
src/Lightweight/DataMapper/Pool.cpp	Global singleton pool implementation
src/Lightweight/Lightweight.hpp	Exposes Pool.hpp in public API
src/Lightweight/CMakeLists.txt	Adds CMake configuration options and compile definitions for pool settings
src/tests/DataMapper/AsynchronousTests.cpp	Adds comprehensive tests for all pool strategies and concurrent usage

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[christianparpart]

Documentation is missing on every public type and member. This has an impact also on our documentation website.

[Yaraslaut]

Added documentation

[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 15 comments.

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