Option to use Redis 7.4 hash field ttl for presence

[FZambia]

Redis 7.4 added per HASH field TTL. Here we use it for presence information by adding new option UseHashFieldTTL to RedisPresenceManagerConfig. Benefits:

• less memory for presence data since less data to keep (no need in separate ZSET), up to 1.6x improvement.
• slightly better CPU utilization on Redis side since less keys to deal with in LUA scripts during presence get, add, remove operations.

[codecov]

Codecov Report

Attention: Patch coverage is 81.81818% with 2 lines in your changes missing coverage. Please review.

Project coverage is 81.43%. Comparing base (70fd357) to head (06f5159).
Report is 1 commits behind head on master.

Files	Patch %	Lines
presence_redis.go	81.81%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #403      +/-   ##
==========================================
- Coverage   81.46%   81.43%   -0.03%     
==========================================
  Files          40       40              
  Lines        7174     7181       +7     
==========================================
+ Hits         5844     5848       +4     
- Misses        952      956       +4     
+ Partials      378      377       -1     

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