optimize: Add more configuration tips in additional-spring-configuration-metadata.json

[wangliang181230]

Ⅰ. Describe what this PR did

optimize: Add more configuration tips in additional-spring-configuration-metadata.json.
优化：添加更多配置提示信息到additional-spring-configuration-metadata.json中。
在springboot项目的yaml配置文件里，编写配置时，将会有提示信息，部分配置还有可选值提示。非常方便。

注：此PR是从 #2964 中拆分出来的。

顺便优化以下内容

1. 将常量类由类变更为接口，使代码看起来更简单。（无任何常量值或功能变更）
2. 优化WorkThreadMode.getModeByName(String name)方法。

Ⅱ. Does this pull request fix one issue?

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

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-commenter]

Codecov Report

Merging #3118 into develop will increase coverage by 0.05%.
The diff coverage is 66.66%.

@@              Coverage Diff              @@
##             develop    #3118      +/-   ##
=============================================
+ Coverage      50.58%   50.63%   +0.05%     
+ Complexity      3105     3103       -2     
=============================================
  Files            599      593       -6     
  Lines          19514    19495      -19     
  Branches        2408     2406       -2     
=============================================
+ Hits            9871     9872       +1     
+ Misses          8651     8633      -18     
+ Partials         992      990       -2     

Impacted Files	Coverage Δ	Complexity Δ
...n/src/main/java/io/seata/common/DefaultValues.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...ava/io/seata/core/constants/ConfigurationKeys.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...java/io/seata/core/protocol/ProtocolConstants.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...ta/integration/grpc/interceptor/GrpcHeaderKey.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...ommon/src/main/java/io/seata/common/Constants.java	100.00% <100.00%> (+50.00%)	1.00 <1.00> (ø)
.../java/io/seata/core/rpc/netty/NettyBaseConfig.java	43.28% <100.00%> (+7.17%)	2.00 <0.00> (ø)
.../io/seata/rm/datasource/undo/UndoLogConstants.java	100.00% <100.00%> (+33.33%)	1.00 <1.00> (ø)
...ta/spring/boot/autoconfigure/StarterConstants.java	100.00% <100.00%> (+3.70%)	1.00 <1.00> (ø)
...java/io/seata/server/metrics/MeterIdConstants.java	100.00% <100.00%> (+3.44%)	1.00 <1.00> (ø)
...o/seata/server/coordinator/DefaultCoordinator.java	54.63% <0.00%> (-0.52%)	28.00% <0.00%> (-1.00%)
... and 1 more

[funky-eyes]

LGTM

[slievrly]

LGTM

[lightClouds917]

LGTM