res_sorcery_memory_cache: Add CLI commands and AMI actions.

This change adds the following CLI commands and AMI actions:

sorcery memory cache show
sorcery memory cache dump
sorcery memory cache expire
sorcery memory cache stale

SorceryMemoryCacheExpire
SorceryMemoryCacheExpireObject
SorceryMemoryCacheStale
SorceryMemoryCacheStaleObject

These allow both examination and manipulation of sorcery memory
caches from external sources.

Cached objects can be explicitly expired from a cache or marked
as stale. If expired they are immediately removed. If marked as
stale they will be background refreshed when next retrieved.

ASTERISK-25067
Reported by Matt Jordan

Change-Id: I68e03cfd8c34b5e07f4b6ee4fd93a3f4a00a3d9e