Changes the behaviour of MultipleFactory and implements build speed overrides.

[CCHyper]

Closes #106, Closes #656, Closes #657, Closes #658, Closes #659

This pull request covers multiple related items;

• Changes the effect of the MultipleFactory bonus to be the same as Red Alert 2 when calculating an object's build time. Now, this is a straight discount multiplier that is cumulative.

• [TechnoTypes]
BuildTimeMultiplier=<float>
  Multiplier to the time it takes for an object to be built. Defaults to 1.0.

• [General] (RULES.INI)
  LowPowerPenaltyModifier=<float>
  The "double penalty" or "half penalty". Multiply this by the power units you are short of to get the actual penalty to the build speed. Defaults to 1.0.

• WorstLowPowerBuildRateCoefficient and BestLowPowerBuildRateCoefficient now have an effect on the production times when in a low power state. Previously there were not used.

• [General] (RULES.INI)
  MultipleFactoryCap=<integer>
  The maximum number of factories that can be considered when calculating the multiple factory bonus on an object's build time. Defaults to 0 (no limit).

[github-actions]

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These links are also updated when the pull request is pushed to.

• vinifera-preview-4b3a243.zip
• vinifera-preview-4b3a243-ts_client.zip

[Bittah]

With MultipleFactory=0.8 it takes this many seconds to produce a refinery with the specified number of factories:
1: ~23
2: ~15
3: ~12
4: ~9
5: ~7
6: ~6
7: ~5
8: ~4

With MultipleFactory=0.5 it takes this many seconds to produce a refinery with the specified number of factories:
1: ~23
2: ~6
3: ~3
4: ~1

And with MultipleFactory=0 and MultipleFactory=1 it always takes ~23 seconds to produce a refinery.

In YR with MultipleFactory=0.8 producing a refinery takes ~20 seconds for 1 ConYard, ~16 seconds for 2 ConYards and ~12 seconds for 3 ConYards
and with MultipleFactory=0.5 it takes ~9.5 seconds for 2 ConYards and ~4.5 seconds for 3 Conyards.

All tests were done at 60 FPS.