fix: move focus function to unit manager

fix(localbinding): correctly get pet managers

fix(localbinding): correct player manager offsets

fix(localbinding): use correct pattern and offset for pet manager

feat(samples): fix external browser to work with the new mappings

feat(localbinding): add pet manager mapping

feat(localbinding): split obtaining objects from hooking completely

fix(packets): use skill vnum instead of id to avoid confustion between cast id and skill vnum

feat(sample): add external memory browser sample

feat: add external memory nostale browser

feat(samples): add default packets

feat(packets)!: let the user add the default packet converters

feat(samples): log nos binding manager initialization result correctly

chore: remove missing projects from the solution

chore: remove unnecessary DllExport

feat(localbinding): rename Character to PlayerManager

feat(tests): add tests for bool and string converters

fix(tests): test null values correctly

fix(packets): make correct fields nullable

feat(serializer): fix null representation as stated in #18