Culture tweaks for conversion to Fallen Eagle

[DEO211]

Culture changes that are primarily related to TFE conversions with two exceptions. Mostly based on "Tweaks for conversion to Fallen Eagle" issue. Changes are:

• Punic, Old Egyptian, Slavic, and Hunnic convert to their TFE equivalents
• Dnieper Baltic and Slavic cultures are mapped to closest equivalent Invictus Balto-Slavic culture
• South Arabic and Himyarite are mapped to the Invictus South Levantine culture group
• Callaecian, Cantabrian and Asturian celtiberian cultures are mapped individually as they have TFE equivalents
• TFE Noric and Illyrian represent their respective culture groups
• More germanic tag cultures along with fixing ones that would previously never work
• Change Tyrrenic mapping so Rhaetian could spawn in rhaetia

The two non-TFE exceptions I mentioned were the Tyrrenic change and the two germanic tag cultures of Frisian and Angle. Other than that, these changes only affect games converted with TFE.

Before:

(This screenshot was taken before the irRegion fixes were put out so Aegyptian, Alemannic, Sephardi, and Avar would normally be Hellenic, Suebi, Hebrew, and either Sarmatian or Scythian)

After:

[IhateTrains]

Thanks for the pull request! All but the herulian mapping looks good, please look at my comment.