feature: add transaction service group for metric

[xuande]

Ⅰ. Describe what this PR did

Add transaction service group for metric.

Ⅱ. Does this pull request fix one issue?

feature#3471

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[caohdgege]

plz deal with the ci exception

[codecov-io]

Codecov Report

Merging #3486 (18d013a) into develop (b503ce6) will decrease coverage by 0.00%.
The diff coverage is 68.51%.

@@              Coverage Diff              @@
##             develop    #3486      +/-   ##
=============================================
- Coverage      51.61%   51.60%   -0.01%     
+ Complexity      3392     3383       -9     
=============================================
  Files            621      621              
  Lines          20528    20545      +17     
  Branches        2558     2560       +2     
=============================================
+ Hits           10595    10602       +7     
- Misses          8874     8880       +6     
- Partials        1059     1063       +4     

Impacted Files	Coverage Δ	Complexity Δ
...va/io/seata/core/event/GlobalTransactionEvent.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...o/seata/server/coordinator/DefaultCoordinator.java	53.05% <50.00%> (-0.26%)	28.00 <2.00> (-1.00)
.../java/io/seata/server/coordinator/DefaultCore.java	51.13% <62.50%> (+1.42%)	26.00 <4.00> (ø)
...ava/io/seata/server/metrics/MetricsSubscriber.java	79.03% <76.92%> (+0.30%)	7.00 <4.00> (ø)
...on/src/main/java/io/seata/common/util/NetUtil.java	45.83% <0.00%> (-6.07%)	14.00% <0.00%> (-4.00%)
...erver/storage/file/session/FileSessionManager.java	51.82% <0.00%> (-5.11%)	26.00% <0.00%> (-1.00%)
...in/java/io/seata/server/session/SessionHolder.java	53.17% <0.00%> (-3.18%)	30.00% <0.00%> (-4.00%)
...torage/file/store/FileTransactionStoreManager.java	57.05% <0.00%> (-0.65%)	28.00% <0.00%> (-1.00%)
...rage/redis/store/RedisTransactionStoreManager.java	63.92% <0.00%> (-0.46%)	37.00% <0.00%> (-1.00%)
...in/java/io/seata/server/session/GlobalSession.java	83.63% <0.00%> (-0.46%)	71.00% <0.00%> (-1.00%)
... and 7 more

[funky-eyes]

麻烦把没有没改动就进行了代码格式化的地方还原一下,这样有利于只关注你真正改动的地方进行code review

[spilledyear]

all seems good

[xuande]

麻烦把没有没改动就进行了代码格式化的地方还原一下,这样有利于只关注你真正改动的地方进行code review

目前就只格式化了涉及修改的代码行，因为代码超长格式化后出现了断行导致冲突较多

[zhengyangyong]

LGTM

[funky-eyes]

LGTM

[funky-eyes]

请在changes文件夹中的2个md文件进行登记pr信息和作者信息

[xingfudeshi]

LGTM.

[slievrly]

LGTM