refact(core): support auth config for computer task

[diaohancai]

Purpose of the PR

• fix #264

Main Changes

• Add authentication configuration. computer.properties: hugegraph.username= hugegraph.password=

• Construct HugeClient add configUser: new HugeClientBuilder(url, graph).configUser(username, password)

Verifying these changes

• [X] Trivial rework / code cleanup without any test coverage. (No Need)
• [ ] Already covered by existing tests, such as (please modify tests here).

• [ ] Need tests and can be verified as follows.

Does this PR potentially affect the following parts?

• [X] Nope
• [ ] Dependencies (add/update license info)
• [ ] Modify configurations
• [ ] The public API
• [ ] Other affects (typed here)

Documentation Status

• [ ] Doc - TODO
• [ ] Doc - Done
• [X] Doc - No Need

[codecov[bot]]

Codecov Report

Merging #265 (db71320) into master (fdb4621) will increase coverage by 0.00%. Report is 2 commits behind head on master. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master     #265   +/-   ##
=========================================
  Coverage     85.83%   85.83%           
+ Complexity     3235     3234    -1     
=========================================
  Files           344      344           
  Lines         12115    12124    +9     
  Branches       1092     1092           
=========================================
+ Hits          10399    10407    +8     
  Misses         1194     1194           
- Partials        522      523    +1     

Files	Coverage Δ
...ugegraph/computer/core/config/ComputerOptions.java	98.90% <100.00%> (+<0.01%)	:arrow_up:
...raph/computer/core/output/hg/task/TaskManager.java	63.51% <100.00%> (+1.01%)	:arrow_up:
...graph/computer/core/input/hg/HugeGraphFetcher.java	100.00% <100.00%> (ø)
.../computer/core/input/hg/HugeInputSplitFetcher.java	93.93% <100.00%> (+0.60%)	:arrow_up:

... and 2 files with indirect coverage changes

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more