refactor(components): Rename Memory Component for Better Clarity and Consistency

[Vigtu]

Changes in Helper Components:

Component Renames:

1. Memory -> MessageRetriever:

• Renamed class from MemoryComponent to MessageRetrieverComponent
• Updated display name to "Message Retriever"
• Changed icon to "message-square-text"
• Updated component name to "MessageRetriever"

Import Updates:

• Updated import statements in init.py
• Renamed imported components:
  • MemoryComponent -> MessageRetrieverComponent

File Renames:

• memory.py -> message_retriever.py

No Functional Changes:

• Core functionality remains the same
• Only naming and cosmetic changes applied
• Component descriptions maintained

[erichare]

@Vigtu do you mind fixing the merge conflicts? This looks great by the way!

[Vigtu]

I believe that the changes are no longer necessary, due to the implementations that are already being made in the memory component, that said I will be closing this PR