Add SpringCloud XA support

[fjz99]

Make sure that:

• [x] You have read the contribution guidelines.
• [x] You submit test cases (unit or integration tests) that back your changes.
• [x] Your local test passed mvn clean install -Dmaven.javadoc.skip=true.

[fjz99]

@prFor

[codecov-commenter]

Codecov Report

Merging #337 (82991f6) into master (01cae1c) will not change coverage. The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master    #337    +/-   ##
=======================================
  Coverage    0.00%   0.00%            
=======================================
  Files         426     436    +10     
  Lines        8268    8399   +131     
  Branches     1354    1373    +19     
=======================================
- Misses       8268    8399   +131     

Impacted Files	Coverage Δ
...dromara/hmily/core/context/HmilyContextHolder.java	0.00% <ø> (ø)
...omara/hmily/xa/core/HmilyXaTransactionManager.java	0.00% <0.00%> (ø)
...c/main/java/org/dromara/hmily/xa/core/XidImpl.java	0.00% <0.00%> (ø)
...ain/java/org/dromara/hmily/xa/rpc/RpcResource.java	0.00% <ø> (ø)
...main/java/org/dromara/hmily/xa/rpc/RpcXaProxy.java	0.00% <ø> (ø)
...ly/xa/rpc/spring/BeginHmilyTransactionHandler.java	0.00% <ø> (ø)
...y/xa/rpc/spring/CommitHmilyTransactionHandler.java	0.00% <0.00%> (ø)
...mily/xa/rpc/spring/DefHmilyTransactionHandler.java	0.00% <ø> (ø)
.../xa/rpc/spring/PrepareHmilyTransactionHandler.java	0.00% <0.00%> (ø)
.../xa/rpc/spring/RecoverHmilyTransactionHandler.java	0.00% <ø> (ø)
... and 15 more

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