feat: adds common workflow crd struct

[semmet95]

Summary by cubic

Adds a shared Workflow CRD and Go type (core.oam.dev/v1alpha1) moved from Workflow repo for a consistent workflow definition. Includes the CRD manifest and generated deepcopy code.

Fixes: #122

• New Features

  • New Workflow type in apis/oam/v1alpha1.
  • Added CRD manifest: crds/core.oam.dev_workflows.yaml (namespaced, kind: Workflow).
  • Regenerated deepcopy and updated CRD annotations to controller-gen v0.16.5.

• Dependencies

  • Added github.com/kubevela/workflow v0.6.2.
  • Bumped apiserver-runtime and mergo versions.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.64%. Comparing base (a2894a6) to head (39870b0).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #120      +/-   ##
==========================================
- Coverage   86.78%   86.64%   -0.15%     
==========================================
  Files          82       82              
  Lines        4071     4072       +1     
==========================================
- Hits         3533     3528       -5     
- Misses        406      410       +4     
- Partials      132      134       +2     

Flag	Coverage Δ
unit-test	86.64% <100.00%> (-0.15%)	⬇️

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[cubic-dev-ai]

1 issue found across 8 files

Prompt for AI agents (all 1 issues)

Understand the root cause of the following 1 issues and fix them.


<file name="crds/core.oam.dev_workflows.yaml">

<violation number="1" location="crds/core.oam.dev_workflows.yaml:41">
Custom fields are defined at the top level instead of under .spec, deviating from Kubernetes API conventions and risking tooling/user confusion.</violation>
</file>

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