Datasette-Lite improvements

[wragge]

Add an option to create a full text index for specified tables. Need to:

• add a ft parameter in urls, modify index.html to get the parameters
• in webworker loop through ft values and use .enable_fts() on table

[wragge]

Also:

• modify the datasette-multiline-links plugin to recognise other delimiters (eg pipes)

[wragge]

Done. https://updates.timsherratt.org/2024/01/12/customising-datasettelite-to.html