Verify that data is correctly ordered and reject packets that aren't. Also generates a random game id to ensure packets are coming from legitimate clients.
* add getters for frame poses
* fix missing joint in GetJointPose
* clean up models_iqm.cpp
* clean up usage of I_GetTimeFrac, split out matrix calculation into its own function
* clean up SetModelBoneRotationInternal
* clean up a few float <-> double and unsigned <-> signed warnings
* fix more warnings
* further clean up warnings
* split mode ObjectToWorldMatrix stuff
* initial work on bone getters, matrix hell
(the matrix/vec3 multiplications are probably wrong af, just gotta add more stuff 'till i can test it)
* clean up matrix math
* GetBone/TransformByBone
* fix GetBoneFramePose
* fix ObjectToWorldMatrix
* fix missing array resize
* raw matrix getters (for use with gutamatics/etc)
* reverse matrix mult order
* replace GetBoneLength/GetBoneDir with GetBoneBaseTRS
* fix GetBonePosition, remove GetBoneWorldMatrix as it's useless
* GetBonePosition
* deduplicate code
* rename GetBonePosition to GetBoneBasePosition to avoid confusion
* GetBoneBaseRotation
* GetBonePosition helper function
* forgot include_offsets
* split frame info calculation from RenderFrameModels
* clean up fvec4 being used as quat in iqms
* initial work on bone setting
* implement bone setters
* clean up FindModelFrame
* refactor model overrides into its own function
* refactor frame rendering into RenderModelFrame
* split frame processing into ProcessModelFrame
* refactor BoneOverride in preparation for translation/scale overrides
* clean up macros
* SetBoneTranslation/SetBoneScaling
* GetBoneOffset
* fix compilation on linux/mac (fuck you MSVC)
* fix typo 😅
* make sure bone overrides are cleared on model switches, add ClearBoneOffsets to clear them manually
* bone info getters
* fix joint lengths, add joint dirs
* serialize bone overrides
* fix bone dir return type
* GetBoneIndex/GetBoneCount
* helper functions for working with non-quat angles
* add mode enum, add more helper functions
* fix up formatting
