Revert "[Core] Revert namespace of ExtensionMethods for now"
Revert "[Core] Revert namespace of ExtensionMethods for now"

This reverts commit 122754cb162fe3b68ec443a51dbe9121e2066ee8.

LaserHydra/Oxide,Visagalis/Oxide,Visagalis/Oxide,LaserHydra/Oxide