feat(agent): add app starter role in mutli agent

[cinjoseph]

Description

在多Agent的角色中增加了一个AppStarter角色，可以在前端直接选目标APP进行启动。

How Has This Been Tested?

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Checklist:

• [*] My code follows the style guidelines of this project
• [*] I have already rebased the commits and make the commit message conform to the project standard.
• [*] I have performed a self-review of my own code
• [*] I have commented my code, particularly in hard-to-understand areas
• [*] I have made corresponding changes to the documentation
• [*] Any dependent changes have been merged and published in downstream modules