Add Soft Fork options to simulator config

Purpose:

Allow user to set simulator fork block height

Current Behavior:

No forks active on simulator (copy main net values, way too high for sim)

New Behavior:

All forks active by default (block height zero)

Testing Notes:

Not sure if needed, as existing consensus code is used. This just adds a shortcut to enable the forks on the simulator.

i added the commit label

File	Coverage	Missing Lines
chia/cmds/sim_funcs.py	0.0%	lines 103-104, 108, 110, 112-113, 115-116, 123-131

Total	Missing	Coverage
17 lines	17 lines	0%

I don't believe this affects the simulations that are run as part of the full node tests, right?

I don't believe this affects the simulations that are run as part of the full node tests, right?

it does not