[Vis Builder] Agg data persistence when switching among area, line and and histogram vis type

[abbyhu2000]

We should persist the aggregation values when we switch among vis types so user do not need to redo the aggregations.

Since area and line and histogram vis type have very similar config schema for aggregations, we should map the aggregations correspondingly. All three vis type schema have metric, segment, split and radius with the exact mac and min requirement. Line type have an extra schema radius, it will not get mapped.

[abbyhu2000]

Close this issue since a new proposal is documented here: #3482