Unify glob utilities

[jjbayer]

Relay currently has three separate utility classes for glob matching:

module	translation to regex	regex caching	capturing	configurable	multiple	builder	mode
relay_common::glob	globset	global		x			binary
relay_common::glob2	manual	local (with LazyGlob)	x				utf8
relay_common::glob3	globset	local			x	x	utf8

Attempt to unify these.

[Dav1dde]

• glob is only used for librelay which has been fully moved into the ffi crate.
• glob3 is fully replaced with relay-pattern.
• glob2 still needs work to implement separator matching.