table: column filters

[fossilfriend]

implement column filters, tied to the FILTER button in the column headers

see https://www.pencilandpaper.io/articles/ux-pattern-analysis-enterprise-filtering#table-header-filtering for inspiration, with following caveats:

• resolve based on cell type
• handling of numbers (floats / integers) needs additional consideration; table for now
• if too many choices or text too long; disable column filter and only allow global filtering on that field
• no more than 10(?) choices (threshold negotiable/get JS dev group opinion) others should be collapsed into "Other"
• NAs should be an option when relevant

NA handling:

• maybe need to include additional NA filter allowing users to hide rows with NA