Make API use TRACY_EXPORTS, and replace TRACYPROFILER_EXPORTS with TRACY_EXPORTS in vcxproj projects.
Swap dllimport with dllexport. Reason for this is a common idiom in CMake: target_compile_definitions(tracy PUBLIC -DTRACY_IMPORTS PRIVATE -DTRACY_EXPORTS). This idiom adds both defines in tracy target, but targets that link to tracy only get TRACY_IMPORTS. Swapped statements ensure that tracy always dllexports it's api and consuming targets always dllimport it.
