Fix 1 Complexity, 5 Style issues in multiple files

[LiquidityC]

CodeFactor found multiple issues:

Complex Method

src\CollisionDetector.cpp:74-155

Redundant blank line at the start of a code block should be deleted.

testsrc\EntityContainerTest.cpp:169
testsrc\EntityContainerTest.cpp:194

Line ends in whitespace. Consider deleting these extra spaces.

src\Dimension.h:14
testsrc\ButtonTest.cpp:8
testsrc\EntityImpl.h:9