Search commands should support query against fields where the value is a simple array

[mwvaughn]

Is your feature request related to a problem? Please describe.
Some Tapis primitives have fields where the contents are a simple array of values. Examples include app.tags and metadata.associationIds. At present, there is no supported way to query them since the SearchArg subclasses don't know how to construct such a query.

Describe the solution you'd like
It should be possible to search an array field for exact matches using the modifiers inc (includes) and ninc (doesn't include). Example: tapis apps search --tags inc rnaseq to find apps tagged with rnaseq.

Describe alternatives you've considered
We could use other modifiers, such as in and nin but the semantics are backwards. For example: tapis search --tags in rnaseq