refactor: chat model tool choice

[N3kox]

What type of PR is this?

refactor: remove tool_choice in model callback input

Check the PR title.

• This PR title match the format: <type>(optional scope): <description>
• The description of this PR title is user-oriented and clear enough for others to understand.
• Attach the PR updating the user documentation if the current PR requires user awareness at the usage level. User docs repo

(Optional) Translate the PR title into Chinese.

chat model tool choice 重构

(Optional) More detailed description for this PR(en: English/zh: Chinese).

en:

1. remove tool choice (type any) from callback input
2. add tool choice string type def and enums
3. add model common call option with tool choice

zh(optional):

1. 移除 callback input 中 any 类型的 tool choice
2. 新增 string 类型 tool choice 定义，给出枚举值
3. model call option 支持请求级别配置 tool choice

(Optional) Which issue(s) this PR fixes:

(optional) The PR that updates user documentation:

[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/schema
  Compatible changes:
  - ToolChoice: added
  - ToolChoiceAllowed: added
  - ToolChoiceForbidden: added
  - ToolChoiceForced: added

github.com/cloudwego/eino/components/model
  Incompatible changes:
  - CallbackInput.ToolChoice: removed
  Compatible changes:
  - Options.ToolChoice: added
  - WithToolChoice: 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: 84.1% (3287/3909)

[BytePender]

LGTM