Optimize network message handle

[jolestar]

1. 优化了一下 CompatBlock 消息的处理机制，同步状态下依然继续处理 CompatBlock 消息。
2. 增加了配置项目，节点可以定义 p2p 网络支持的连接数。

[codecov]

Codecov Report

Merging #2350 (877637c) into master (ae80c23) will increase coverage by 0.26%.
The diff coverage is 48.00%.

@@            Coverage Diff             @@
##           master    #2350      +/-   ##
==========================================
+ Coverage   33.12%   33.38%   +0.26%     
==========================================
  Files         477      477              
  Lines       41153    41159       +6     
  Branches    18463    18465       +2     
==========================================
+ Hits        13628    13736     +108     
+ Misses      13721    13524     -197     
- Partials    13804    13899      +95     

Flag	Coverage Δ
unittests	33.38% <48.00%> (+0.26%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
block-relayer/src/block_relayer.rs	30.00% <0.00%> (+0.46%)	⬆️
config/src/tests.rs	28.00% <ø> (ø)
network/src/worker.rs	36.85% <0.00%> (-2.04%)	⬇️
txpool/src/lib.rs	47.33% <ø> (ø)
network/src/service.rs	26.81% <28.58%> (-0.59%)	⬇️
config/src/network_config.rs	53.61% <71.43%> (+1.70%)	⬆️
network-p2p/src/request_responses.rs	30.20% <0.00%> (-0.34%)	⬇️
...able-jellyfish-merkle/src/jellyfish_merkle_test.rs	18.85% <0.00%> (-0.22%)	⬇️
commons/stream-task/src/tests.rs	31.43% <0.00%> (ø)
... and 11 more

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[github-actions]

Benchmark for c886b38

Click to view benchmark

Test	PR Benchmark	Master Benchmark	%
accumulator_append	1204.3±63.19µs	1269.1±81.13µs	-5.11%
block_apply/block_apply_10	363.0±2.10ms	363.7±1.56ms	-0.19%
block_apply/block_apply_1000	37.8±0.51s	38.0±0.37s	-0.53%
get_with_proof/db_store	42.5±0.59µs	43.7±0.60µs	-2.75%
get_with_proof/mem_store	32.6±0.45µs	33.0±0.26µs	-1.21%
put_and_commit/db_store/1	531.3±24.87µs	540.1±28.60µs	-1.63%
put_and_commit/db_store/10	1616.2±89.78µs	1532.5±128.29µs	+5.46%
put_and_commit/db_store/100	9.3±0.46ms	9.2±0.45ms	+1.09%
put_and_commit/db_store/5	1006.7±75.08µs	1002.7±89.88µs	+0.40%
put_and_commit/db_store/50	5.2±0.26ms	5.2±0.25ms	0.00%
put_and_commit/mem_store/1	72.8±3.75µs	73.7±3.78µs	-1.22%
put_and_commit/mem_store/10	649.6±29.25µs	646.2±31.33µs	+0.53%
put_and_commit/mem_store/100	6.2±0.55ms	6.1±0.57ms	+1.64%
put_and_commit/mem_store/5	333.7±17.04µs	335.8±17.83µs	-0.63%
put_and_commit/mem_store/50	3.1±0.13ms	3.1±0.12ms	0.00%
query_block/query_block_in(10)_times(100)	3.2±0.08ms	3.3±0.05ms	-3.03%
query_block/query_block_in(10)_times(1000)	32.8±1.38ms	32.0±0.87ms	+2.50%
query_block/query_block_in(10)_times(10000)	322.5±4.55ms	322.7±6.52ms	-0.06%
query_block/query_block_in(1000)_times(100)	1312.0±25.06µs	1324.4±4.71µs	-0.94%
query_block/query_block_in(1000)_times(1000)	13.1±0.10ms	13.2±0.04ms	-0.76%
query_block/query_block_in(1000)_times(10000)	130.7±0.45ms	131.6±0.65ms	-0.68%
storage_transaction	12.8±0.78ms	13.8±0.73ms	-7.25%
vm/transaction_execution/1	379.0±2.61ms	379.1±2.91ms	-0.03%
vm/transaction_execution/10	123.3±0.33ms	123.1±1.00ms	+0.16%
vm/transaction_execution/20	114.4±0.64ms	114.4±1.14ms	0.00%
vm/transaction_execution/5	148.5±0.28ms	150.0±1.61ms	-1.00%
vm/transaction_execution/50	130.3±0.77ms	133.5±1.95ms	-2.40%