Add vectorization support to Flux map function

[wolffcm]

With #4184 and #4185 complete, it should be possible to execute very simple vectorized functions from map in Flux.

The work of this issue will be to execute lambdas using the compiler package, passing the table chunk as input, by creating an instance of values.Value that is the table chunk as an object with vector fields. An example of this is here:
https://github.com/influxdata/flux/pull/3930/files#diff-ca52e5e5693fff638788b406cc69092210f978d482989588503142cf525b95f4R288

When the function has completed executing, the map transformation should convert the output value into an instance of flux.Table.

Add a new feature flag that will make map execute the vectorized version of a function if it exists.

DOD:

• New feature flag added
• map uses vectorized function if it exists and feature flag is enabled
• There should be existing acceptance tests that demonstrate that this all works end-to-end. They might already exist. If they don't, add them