feat: factory reset endpoint

[alfredotoselli]

Description

Hello! Happy to learn about the project and start contributing on technical stuff :)
Let's check if the endpoint makes sense as is and if any corner case comes to your minds.
If ok I'll add a couple of tests before merging.

The situation will be:

• Possibility to wipe out the collections also from admin panel button
• Inactive reset buttons for llm and embedder on the settings panel
  • As mentioned in the issue we should decide if restore the last setting present on DB or the setting on the first installation
• This new /settings/factory-reset endpoint (currently without button) that wipes out all the collections, deletes metadata.json and performs a "soft restart"

Related to issue #797

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

[matteocacciola]

if you move the delete_collection in the vector_memory_collection.py like

    def wipe(self) -> bool:
        try:
            self.client.delete(collection_name=self.collection_name)
            return True
        except Exception as e:
            log.error(f"Error deleting collection {self.collection_name}: {e}")
            return False

you could use

to_return = {str(c): ccat.memory.vectors.collections[str(c)].wipe() for c in MemoryCollection}

[alfredotoselli]

Thanks for the suggestion! I made slightly different thing because there is direct access to the memory from the stray