feat: 增加中间件缓存

[thinkgos]

增加缓存中间件

[codecov]

Codecov Report

Attention: Patch coverage is 69.64286% with 68 lines in your changes missing coverage. Please review.

Project coverage is 24.62%. Comparing base (7db0c0a) to head (cb29627).
Report is 76 commits behind head on main.

Files with missing lines	Patch %	Lines
examples/cache/redis/redis.go	0.00%	19 Missing ⚠️
examples/cache/custom/custom.go	0.00%	17 Missing ⚠️
examples/cache/memory/memory.go	0.00%	14 Missing ⚠️
cache/encoding.go	61.53%	7 Missing and 3 partials ⚠️
cache/pool.go	66.66%	4 Missing ⚠️
cache/cache.go	96.90%	2 Missing and 1 partial ⚠️
cache/persist/redis/redis.go	92.85%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #71       +/-   ##
===========================================
- Coverage   83.01%   24.62%   -58.40%     
===========================================
  Files           3       28       +25     
  Lines         106      999      +893     
===========================================
+ Hits           88      246      +158     
- Misses         16      747      +731     
- Partials        2        6        +4     

Flag	Coverage Δ
unittests	24.62% <69.64%> (-58.40%)	⬇️

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