Refactor flow algorithm for parameter flow control and support more traffic shaping mode

[sczyh30]

Describe what this PR does / why we need it

Refactor flow algorithm for parameter flow control and support more traffic shaping mode.

Does this pull request fix one issue?

Resolves #640

Describe how you did it

• Add fields in ParamFlowRule to support burst count, throttle, statistic interval per rule.
• Deprecate HotParamLeapArray and use token bucket algorithm directly.

Some of the code should be rearranged and improved.

Describe how to verify it

Run the test cases and demo.

Special notes for reviews

This PR contains breaking changes. Please take it carefully.

[codecov-io]

Codecov Report

Merging #677 into master will increase coverage by 0.82%.
The diff coverage is 66.88%.

@@             Coverage Diff              @@
##             master     #677      +/-   ##
============================================
+ Coverage     40.83%   41.65%   +0.82%     
- Complexity     1220     1249      +29     
============================================
  Files           267      266       -1     
  Lines          7920     7992      +72     
  Branches       1076     1103      +27     
============================================
+ Hits           3234     3329      +95     
+ Misses         4290     4247      -43     
- Partials        396      416      +20

Impacted Files	Coverage Δ	Complexity Δ
...ots/statistic/ParamFlowStatisticEntryCallback.java	0% <ø> (ø)	0 <0> (ø)	⬇️
...nd/handler/ModifyParamFlowRulesCommandHandler.java	0% <ø> (ø)	0 <0> (ø)	⬇️
...mmand/handler/GetParamFlowRulesCommandHandler.java	0% <ø> (ø)	0 <0> (ø)	⬇️
...l/slots/block/flow/param/ParamFlowRuleManager.java	75% <ø> (ø)	7 <0> (ø)	⬇️
...inel/slots/block/flow/param/ParamFlowRuleUtil.java	50.87% <0%> (-2.83%)	20 <0> (ø)
...sentinel/slots/block/flow/param/ParamFlowSlot.java	81.35% <100%> (+0.1%)	21 <0> (-1)	⬇️
...tinel/slots/block/flow/param/ParamFlowChecker.java	53.02% <63.41%> (+6.26%)	28 <12> (+9)	⬆️
...sentinel/slots/block/flow/param/ParamFlowRule.java	71.05% <70.96%> (+8.08%)	27 <7> (+8)	⬆️
...ntinel/slots/block/flow/param/ParameterMetric.java	75% <77.14%> (+23.63%)	29 <10> (+1)	⬆️
.../slots/statistic/metric/HotParameterLeapArray.java	78.04% <0%> (-7.32%)	10% <0%> (-2%)
... and 2 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 08611fa...20341ff. Read the comment docs.

[CarpenterLee]

LGTM