Add TOOLFORMER_RAG mode

[pradh]

Add a mode=toolformer_rag where we do not limit the number of places in time-delta timelines and ranking tables.

Also in toolformer modes, avoid return multiple charts in basic, and only return what the query asks for.

[shifucun]

I feel we need a DecisionTree class to hold the reasoning flow and by looking at that, can decide on what happened and why. But def something for later.