Added new test for 2D character controller:
Character - Pixels
Functional test for pixel art related issues around KinematicBody and
RigidBody character controllers.
Adjusted existing tests and added more test cases to cover most use
cases from recent fixed issues and regressions for KinematicBody.
Added a more automated way to run all tests with checks to see which
ones failed in character controller tests.
Also fixed some minor issues with the log scrollbar.
Two tests for character controller, with options to use RigidBody2D,
KinematicBody2D or KinematicBody2D with RayShape2D.
Tilemap: Tests for moving and jumping within tilemap blocks, with a
specific one-way collision test case scenario based on Block Climb Test
from https://github.com/madmiraal/godot-gym.
Slopes: Tests for moving and jumping in slopes, with different cases
based on snap and stop-on-slope parameters for kinematic bodies.
