Added Redgum and KangarooPaw to build (T6022, T6020)

New firmware files will be built using the following file names:

Marlin_Redgum_TAZWorkhorse_AchemonSphinx_SmallLayer_*_*.hex
Marlin_Redgum_TAZWorkhorse_Angelfish_Aerostruder_*_*.hex
Marlin_Redgum_TAZWorkhorse_BandedTiger_HardenedSteel_*_*.hex
Marlin_Redgum_TAZWorkhorse_CecropiaSilk_SingleExtruderAeroV2_*_*.hex
Marlin_Redgum_TAZWorkhorse_DingyCutworm_HardenedSteelPlus_*_*.hex
Marlin_Redgum_TAZWorkhorse_Javelin_DualExtruderV2_*_*.hex
Marlin_Redgum_TAZWorkhorse_Kanyu_Flexystruder_*_*.hex
Marlin_Redgum_TAZWorkhorse_Longfin_FlexyDually_*_*.hex
Marlin_Redgum_TAZWorkhorse_Opah_Moarstruder_*_*.hex
Marlin_Redgum_TAZWorkhorse_Tilapia_SingleExtruder_*_*.hex
Marlin_Redgum_TAZWorkhorse_Yellowfin_DualExtruderV3_*_*.hex
Marlin_KangarooPaw_Experimental_KangarooPaw_Experimental_*_*.hex