Introducing the Trompeloeil C++ mocking framework

Trompeloeil is a header-only C++14 mocking framework designed for ease of use without sacrificing expressive power. It uses macros like MAKE_MOCK, REQUIRE_CALL, and NAMED_REQUIRE_CALL to define mock classes and set expectations on method calls. Key features include sequence ordering of calls, wildcards, call count constraints (TIMES, AT_LEAST, AT_MOST), side effects, and the distinction between value-capture and reference-capture variants (LR_ prefix). The framework integrates with existing test runners and follows lifetime-based expectation enforcement via C++ scope rules.