Added and managed ingestion status for files/url

[varrialeciro]

Description

Added an ingestion status in the class of rabbit hole in order to handle a progress status during ingestion of files and urls.

Related to issue #337

Type of change

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

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas

[pieroit]

Hi @varrialeciro I'm not convinced this is the way to go. If the file is big, we need a progress bar, even if approximate.

Can you please send a small PR with just the edits on core/Dockerfile and core/cat/routes/websocket.py? That I'll merge instantly thanks

[pieroit]

thanks!