Decide on ptol and sele military colonies attack

[mimo]

ptol and sele have military colonies instead of civil centre, which have a disabled attack (although they inherit buildingAI arrows from civil centre). So I think it is misleading to give them the metropolis tech which is supposed to double their defaultArrows as it has no effect. I think it would be better, instead of disabling completely their attack component, to give them a small (but non zero!) defaultArrow (1 instead of the 3 from civil centre would be fine) and may-be a zero GarrisonArrowMultiplier if the goal is to keep them weak.

[Nikos]

Military colonies could become a form of barracks for Sele/Ptol training any settler troops (Greek, Macedonian, Galatian, Thracian) while normal barracks train native asian/egyptian etc levy troops. That would give them the normal CC and the Hellenistic Metropolis tech (they are the Hellenistic factions after all). MC could have a limit of one per CC simulating the region has settler troops, with some buff for Seleucids who were very focused on this and/or possibly some tech increasing their limit/reducing build time or traintime.

If the above is rejected, please mind that those are ment to be the housings of semi-professional reserve troops, so having a weak defense doesn't make much sense.

[Lionkanzen]

Michael say, they needs have a mix between barracks and cc like and academy in AOEO I and give actual for to Gaia mercenary camp

[Itms]

I closed #2941 as a duplicate and updated the title here.

[scythetwirler]

I've decided to add a small attack to the military colony that is a tad weaker than its CC counterpart (on the git).