feat: extend shell job

[rfyiamcool]

change

extend shell job

1. add stdout, stderr, result.
2. bash command is preferred，sh command is used only when bash command does not exist. because bash command is more complete than sh command.
3. add ut for shell execute.

[codecov-commenter]

Codecov Report

Merging #64 (1004154) into master (485d76b) will decrease coverage by 0.12%.
Report is 2 commits behind head on master.
The diff coverage is 87.50%.

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@@            Coverage Diff             @@
##           master      #64      +/-   ##
==========================================
- Coverage   90.13%   90.01%   -0.12%     
==========================================
  Files           8        8              
  Lines         527      541      +14     
==========================================
+ Hits          475      487      +12     
- Misses         33       34       +1     
- Partials       19       20       +1     

Files Changed	Coverage Δ
quartz/job.go	97.18% <87.50%> (-2.82%)	⬇️

[reugn]

Suggested change

	stdoutShell := "invliad_command"
	stdoutShell := "invalid_command"

[rfyiamcool]

😁 done