feat: implement direct deal

[simlecode]

关联的Issues (Related Issues)

close #425

改动 (Proposed Changes)

附注 (Additional Info)

自查清单 (Checklist)

在你认为本 PR 满足被审阅的标准之前，需要确保 / Before you mark the PR ready for review, please make sure that:

• 符合Venus项目管理规范中关于PR的相关标准 / The PR follows the PR standards set out in the Venus project management guidelines
• 具有清晰明确的commit message / All commits have a clear commit message.
• 包含相关的的测试用例或者不需要新增测试用例 / This PR has tests for new functionality or change in behaviour or not need to add new tests.
• 包含相关的的指南以及文档或者不需要新增文档 / This PR has updated usage guidelines and documentation or not need
• 通过必要的检查项 / All checks are green

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 15.27514% with 893 lines in your changes are missing coverage. Please review.

Project coverage is 25.00%. Comparing base (2eae8a5) to head (ee9ed0d).

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #509      +/-   ##
==========================================
- Coverage   25.49%   25.00%   -0.50%     
==========================================
  Files         178      182       +4     
  Lines       21068    22111    +1043     
==========================================
+ Hits         5371     5528     +157     
- Misses      14787    15654     +867     
- Partials      910      929      +19     

Flag	Coverage Δ
unittests	25.00% <15.27%> (-0.50%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
cli/storage-deals.go	3.19% <ø> (ø)
metrics/metrics.go	50.00% <ø> (ø)
models/module.go	0.00% <ø> (ø)
models/mysql/storage_deal.go	66.96% <100.00%> (+0.29%)	⬆️
models/repo/repo.go	100.00% <ø> (ø)
storageprovider/modules.go	0.00% <0.00%> (ø)
rpc/rpc.go	0.00% <0.00%> (ø)
models/mysql/db.go	63.01% <40.00%> (-0.37%)	⬇️
models/badger/db.go	56.34% <0.00%> (-2.82%)	⬇️
models/badger/utils.go	47.67% <50.00%> (+0.61%)	⬆️
... and 8 more

[LinZexiao]

LGTM