add java doc to dubbo-config-api

[lixiaojiee]

What is the purpose of the change

add java doc to dubbo-config-api

Brief changelog

/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ServiceConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/AbstractConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/AbstractInterfaceConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/AbstractMethodConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/AbstractReferenceConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/AbstractServiceConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ApplicationConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ArgumentConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ConsumerConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/MethodConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ModuleConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/MonitorConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ProtocolConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ProviderConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ReferenceConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/RegistryConfig.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/invoker/DelegateProviderMetaDataInvoker.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/utils/ReferenceConfigCache.java
/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/MetadataReportConfig.java

#2993

Verifying this change

XXXXX

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[codecov-io]

Codecov Report

Merging #3103 into master will increase coverage by 0.02%.
The diff coverage is 73.45%.

@@             Coverage Diff              @@
##             master    #3103      +/-   ##
============================================
+ Coverage     63.52%   63.54%   +0.02%     
  Complexity       75       75              
============================================
  Files           652      652              
  Lines         28183    28185       +2     
  Branches       4791     4791              
============================================
+ Hits          17902    17909       +7     
+ Misses         8023     8017       -6     
- Partials       2258     2259       +1

Impacted Files	Coverage Δ	Complexity Δ
...org/apache/dubbo/config/AbstractServiceConfig.java	95.77% <ø> (ø)	0 <0> (ø)	⬇️
...n/java/org/apache/dubbo/config/ConsumerConfig.java	92.3% <ø> (ø)	0 <0> (ø)	⬇️
...in/java/org/apache/dubbo/config/MonitorConfig.java	100% <ø> (ø)	0 <0> (ø)	⬇️
...pache/dubbo/config/utils/ReferenceConfigCache.java	75% <ø> (ø)	0 <0> (ø)	⬇️
...n/java/org/apache/dubbo/config/AbstractConfig.java	79.09% <ø> (ø)	0 <0> (ø)	⬇️
.../java/org/apache/dubbo/config/ReferenceConfig.java	57.3% <ø> (-0.77%)	0 <0> (ø)
...ava/org/apache/dubbo/config/ApplicationConfig.java	82.71% <ø> (ø)	0 <0> (ø)	⬇️
...ain/java/org/apache/dubbo/config/ModuleConfig.java	86.84% <ø> (ø)	0 <0> (ø)	⬇️
.../org/apache/dubbo/config/MetadataReportConfig.java	36.36% <ø> (ø)	0 <0> (ø)	⬇️
...n/java/org/apache/dubbo/config/RegistryConfig.java	82.35% <ø> (ø)	0 <0> (ø)	⬇️
... and 24 more

---

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[beiwei30]

LGTM, but @lixiaojiee would you mind to solve the conflict? Thanks.

[beiwei30]

need to solve conflict.

[lixiaojiee]

LGTM, but @lixiaojiee would you mind to solve the conflict? Thanks.

done