Release Catch3 0.3.0.2

Carry mocks in the amalgamated files

Install again with CMake

Mock.hpp goes into catch_amalgamated.hpp, since tests use it directly, and
Mock.cpp into catch_amalgamated.cpp. The test of the amalgamated files
now uses a mock, so a file left out fails it.

cmake --install failed on extras/ParseAndAddCatchTests.cmake, which the
rename to Catch3 removed while CMakeLists.txt kept listing it. No job ran
an install, so nothing showed it. The Linux job now installs the library
and finds the installed package.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Add mocks that report through the assertion path

A report no longer throws, so a noexcept mock survives an aborting run.
A call that has nothing to return still leaves the test case, which ends
the process in a noexcept function; the documentation says so.

RunContext clears the result capture when it goes, so a mock of static
lifetime finds none and writes to standard error.

Decision owns its source line, since Verify can free the expectation
while a call is on its way. Moving a result out takes the lock. Vector
matchers refer to their vector, so they are rejected at compile time
like composed ones. A null text expectation accepts only null, and
integers compare by value, so 256 no longer accepts an unsigned char.