NPC Component Documentation

[itsneufox]

This PR is for the NPC component documentation

The open.mp branch for beta testing is here: openmultiplayer/open.mp#916

[itsneufox]

To any team member: don't merge it yet

[itsneufox]

TODO: Add deprecation notice on ConnectNPC

[itsneufox]

Missing manual review by someone and nodes documentation

[itsneufox]

TODO:
- return values in vehicle related natives are wrong (0 instead of INVALID_VEHICLE_ID)
- Check seats ids

[dockfries]

NPC_StartPlayback may usually specify the filename directly without suffix .rec, = npcmodes/recordings/${fileName}.rec
NPC_StartPlaybackEx with recordId can specify a complete path without suffix .rec? = npcmodes/recordings/${filePath+fileName}.rec. I'm not sure, I may wrong.

NPC_LoadRecord has a similar path problem.

https://github.com/openmultiplayer/open.mp/blob/b876feb66a7b8be4081125e873eb6657ac26109c/Server/Components/NPCs/NPC/npc.cpp#L91

For some deleted documents, links to other related should be removed, for example, OnNPCDisconnect should be changed to OnNPCDestroy etc..

callbacks/**/*.md ---> Related Functions error link, should be ../functions/***
function/**/*.md ---> Related Callbacks error link, should be ../callbacks/***

GetVehicleRotation.md -> Related funtions -> GetVehicleRotation -> GetVehicleRotationQuat.

All files need be format like prettier.

OnNPCEnter/ExitVehicle has been deleted, so NPC_ResetSurfingData need update, btw, are these two callbacks no longer available or missing?

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What about some past APIs? Do those need to be changed or deleted?
For example, GetMyFacingAngle, GetMyPos, OnClientMessage, StartRecordingPlayback, StopRecordingPlayback, etc.

Dont forget global replace <VersionWarn version='omp v1.1.0.changemelater' /> after new version released.