Test Fixes and Improvements

[JustAHuman-xD]

• Fixes tests failing & succeeding inconsistently due to chunk (un)loading
• Adds log line for when tests start
• Suppress intentional error stack traces
• Fix some tests leaving blocks that impact other tests (looking at you ticking err block test)
• Renames the various core registration classes in rebar-test to Test instead of just for consistency (and also to avoid confusion with nms classes)
• changes the entity error test to use damage entity instead of player interact because passing null to the player interact caused a lot of unintended exceptions because null player is illegal

[Seggan]

/home/seggan/Progs/Kotlin/pylonmc/rebar/test/src/main/java/io/github/pylonmc/rebar/test/test/entity/EntityEventErrorTest.java:25: warning: [removal] EntityDamageEvent(Entity,DamageCause,double) in EntityDamageEvent has been deprecated and marked for removal
                        new EntityDamageEvent(entity.getEntity(), EntityDamageEvent.DamageCause.ENTITY_ATTACK, 1).callEvent();
                        ^
Note: /home/seggan/Progs/Kotlin/pylonmc/rebar/test/src/main/java/io/github/pylonmc/rebar/test/test/serializer/SerializerTestItemStack.java uses or overrides a deprecated API.

[JustAHuman-xD]

/home/seggan/Progs/Kotlin/pylonmc/rebar/test/src/main/java/io/github/pylonmc/rebar/test/test/entity/EntityEventErrorTest.java:25: warning: [removal] EntityDamageEvent(Entity,DamageCause,double) in EntityDamageEvent has been deprecated and marked for removal
                        new EntityDamageEvent(entity.getEntity(), EntityDamageEvent.DamageCause.ENTITY_ATTACK, 1).callEvent();
                        ^
Note: /home/seggan/Progs/Kotlin/pylonmc/rebar/test/src/main/java/io/github/pylonmc/rebar/test/test/serializer/SerializerTestItemStack.java uses or overrides a deprecated API.

Yeah it doesn't really matter, I can replace it with something else but for the context of the test it doesn't bear any significance