Revert "Move toolchain files to Toolchain/"

This reverts commit b53947e587d6bda813e8d3cfa6694ff8dde88b6b.
Revert "Delete FindSampgdk3 module"

This reverts commit 6055c3a314cbb92e6933c55ddbad2d59d403b241.

Conflicts:
	lib/subhook
Rewrite the FindSampgdk3 module