refactor: gragp & workflow

[meguminnnnnnnnn]

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[github-actions]

license-eye has totally checked 156 files.

Valid	Invalid	Ignored	Fixed
153	3	0	0

Click to see the invalid file list

• compose/field_mapping.go
• compose/graph_manager.go
• compose/workflow.go

[github-actions]

⚠️ Breaking API Changes Detected

This pull request contains breaking API changes that may affect compatibility:

uncompatible api changes found: 
github.com/cloudwego/eino/compose
  Incompatible changes:
  - (*graph).AddEdge, method set of Graph: removed
  Compatible changes:
  - ComponentOfWorkflow: added
  - FieldMapping: added
  - From: added
  - FromTo: added
  - GraphNodeInfo.Mappings: added
  - NewWorkflow: added
  - To: added
  - WithGetStateEnable: added
  - Workflow: added
  - WorkflowNode: added

Required Actions:

1. Please review these changes carefully
2. Update the user documentation to reflect these API changes
3. Add a note in the changelog about these breaking changes

[github-actions]

📊 Coverage Report:

File coverage threshold (20%) satisfied:	PASS
Package coverage threshold (30%) satisfied:	PASS
Total coverage threshold (75%) satisfied:	PASS
Total test coverage: 83.5% (3290/3940)