feat(*): support wrapper classes for Java basic types

[Mulavar]

What this PR does:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov-commenter]

Codecov Report

Merging #278 (9aafe3b) into master (8679ff8) will increase coverage by 1.21%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #278      +/-   ##
==========================================
+ Coverage   68.87%   70.09%   +1.21%     
==========================================
  Files          26       27       +1     
  Lines        2911     3016     +105     
==========================================
+ Hits         2005     2114     +109     
+ Misses        683      677       -6     
- Partials      223      225       +2     

Impacted Files	Coverage Δ
array.go	100.00% <100.00%> (ø)
java_collection.go	58.90% <0.00%> (+5.47%)	⬆️

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[wongoo]

@Mulavar use Encoder to test encode in unit tests please.

[wongoo]

@Mulavar thanks for your effort. wrapper classes is mainly for java, so the unit test should contains cross language encode/decode. Pls pay more time to do that, thanks very much!

eg:

go encode -> java decode:

• go encode:

  dubbo-go-hessian2/output/output.go

  Line 44 in e0c085c

  funcMap["UserList"] = testfuncs.UserList

• java decode:

  dubbo-go-hessian2/test_hessian/src/test/java/unit/GoUserListTest.java

  Line 33 in e0c085c

  public void testUserList() {

java encode-> go decode:

• java encode:

  dubbo-go-hessian2/test_hessian/src/main/java/test/TestCustomReply.java

  Line 605 in e0c085c

  public void customReplyGenericResponseLong() throws Exception {

• go decode:

  dubbo-go-hessian2/object_test.go

  Line 791 in e0c085c

  func TestCustomReplyGenericResponseLong(t *testing.T) {