Release 4.3.68

add support for Tracy profiler (#1153)

* add support for Tracy profiler

* add tracy client

* add Aidan's StackContext Zone

* a bit more documentation

* doc cleanup

* add HXCPP_TRACY_DISABLE_STACKS flag

* put tracy include behind HXCPP_TRACY

* move code to third party; move tracy into it's own cachable <files> section in haxe-target.xml

* shift tracy telemetry into its own cpp file

* fix incorrect signature

* add global __hxcpp_tracy_* telemetry functions

* add ctx to cppia-stackframe; fix sourcelocation's fullName

* remove the dependency on haxe's stackframe context, use tracyZones vector instead

* update docs

* bug: fix InternalNew's  parameter being used as linenumber in its HX_STACK_FRAME

* fix wrong path in HX_STACK_FRAME

* add HXCPP_TRACY_NO_EXIT & HXCPP_TRACY_ON_DEMAND support

* added HXCPP_TRACY_INCLUDE_CALLSTACKS, use this to generate & include callstacks in the profiler zones

* allocation tracking

* add no-op gc alloc function to hxtelemetry implementation

* Account for the same large object pointer appearing before collection

* add HXCPP_TRACY_MEMORY

* stack depth needs +1

* track large objects globally

* eagerly free large objects

* add __hxcpp_tracy_set_thread_name_and_group; disable custom GC ___tracy_source_location_data

* new tracy telemetry header and hxcpp zone macro

* Use hxcpp float

* fix argument order in custom scope

* Remove test zone function

* line unique scope variable

* callstack macro variant

* fix HXCPP_TRACY_ZONE

* zone count function

* update docs & comments

* update readme

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Co-authored-by: Aidan Lee <aidan.lee63@gmail.com>