feat: added proxies interface on finvizfinance, updated doc too

[vikyw89]

Description

added proxy interface on finvizfinance, updated doc

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x ] This change requires a documentation update
• [ ] Code styling or code optimize

What you did

added proxy on finviz finance, exposing under the hood request proxy param