[tasklist] feat: design and implement context menu for resumes in gallery

[xiaohanyu]

Description

We want to support a list of context operations for sample resumes in gallery page. For example, user can:

• download the resume PDF
• download the resume tex source code
• fork the resume and create their own, this is the most useful one
• zoom in and preview the resume

[Optional] Possible solutions

NA

Acceptance Criteria

• resumes in gallery page show allow a list of context operations

Todo list

- [x] feat: download the resume PDF in gallery page
- [ ] feat: download the resume tex source code in gallery page
- [ ] fork the resume and create their own in gallery page
- [ ] zoom in and preview the resume in gallery page