New Tools for venice_image Skill (vision, enhance, upscale)

[yornfifty]

Description

Added new tools

• image enhancer, can be use to modify an image by enriching the details
• Image Vision, can be use to describe given image url
• image upscale, can be use to increate the size of existing image by 2x or 4x

to make it simplier and esier to maintain, i created api.py to generalize api call and error handling since all of the tools is using similar api call, the api.py is also handling when the api returns an image binary, it will automatically upload it to S3

Type of Change

• [ ] Bugfix
• [x] New Feature
• [x] Improvement
• [x] Documentation Update

Checklist

• [x] I have read the contributing guidelines.
• [ ] I have added tests to cover my changes.
• [x] All new and existing tests passed.

Related Issue

Closes #475 -- image vision

-- image upscale [source, result]