Feat: add job orchestration example

[FogDong]

Description of your changes

Add job orchestration example.

I have:

• Read and followed KubeVela's contribution process.
• Related Docs updated properly. In a new feature or configuration option, an update to the documentation is necessary.
• Run make reviewable to ensure this PR is ready for review.
• Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

Special notes for your reviewer

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (c730c05) 67.48% compared to head (bcf53b0) 67.48%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #152   +/-   ##
=======================================
  Coverage   67.48%   67.48%           
=======================================
  Files          49       49           
  Lines        4505     4505           
=======================================
  Hits         3040     3040           
  Misses       1071     1071           
  Partials      394      394           

Flag	Coverage Δ
e2etests	22.78% <ø> (ø)
unit-test	64.42% <ø> (ø)

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