First release of keyboard layouts

First draft release of runic keyboard layouts:

Elder Fuþark ᚠᚢᛏᚨᚱᚲ
Younger Fuþąrk (mixed Danish and Swedish-Norwegian runes) ᚠᚢᛏᚮᚱᚴ
Danish Fuþąrk ᚠᚢᚦᚨᚱᚴ
Swedish-Norwegian Fuþąrk ᚠᚢᚦᚭᚱᚴ
Dotted Runes ᚠᚢᛐᛆᚱᚴ
Anglo-Saxon Fuþorc ᚠᚢᚦᚩᚱᛣ