views: filter tasks by pattern

[oliver-sanders]

We currently allow filtering tasks by name e.g. in the tree view.

Problem

There is a good use case for filtering by pattern too.

Proposed Solution

Two options:

• Regex
• [ext]glob

Note that extglobs are currently used for task filtering by Cylc Review and are also used by the CLI and for mutations. So using extglobs for task filtering would assist in issuing multi-workflow/multi-task mutations.

Question

1. Regex?
2. [ext]Glob?
3. Both?