Provide documentation on Limits of SA Mobile and Remastered

[OrionSR]

In particular, I just fielded a PM on global variable limits for mobile.

There are a few other differences in limits, I should be able to collect the required info but don't want to lose track of the issue in the meantime.

Is it worth the trouble to document that PS2 only supports 400 cargens?

[x87]

Any documentation can be useful at some point. In particular information on limits. At some point we can integrate extra checks in the compiler (or in third-party tools) to run analysis and give a warning if the number of entities is close to the limit.

[OrionSR]

These are the limits I can establish or confirm using save file and main.scm reference.

SA_Mobile Limits
main size 200000
mission size 69000
running threads 96
local variables 40 + 2 timers
gosub levels 8
radar blips 250
pickups 620
last opcode 0a8d, Remastered 0a90
save garages 16..18,24..32,39..45

Other useful info from original reference:
For garages (including pns, 8ball, mission garages, car crusher etc):
GTA3 - 32
GTAVC - 32
GTASA - 50 (although in ipls there are 52)
The unnamed garages don't seem to exist in game.

[x87]

Updated in
https://docs.sannybuilder.com/scm-documentation/gta-limits