ENH: add sortable/filterable table inspired by pmps-ui

[ZLLentz]

Description

Add the FilterSortWidgetTable widget. This widget allows us to repeat a template generically in a table form, and handle things like sorting and filtering in a re-usable way.

Here's a screenshot of the TMO screen I am working on that uses this widget:

Features:

• [x] Allow a repeated widget from a template and macros
• [x] Dynamically allow sorting on any value
• [x] Allow the user to register filters and enable/disable them live
• [x] Allow the user to manually rearrange the rows of the table (check the configure box)
• [ ] Allow the user to hide/show rows individually
• [ ] Allow the user to save/load the table arrangement
• [ ] Support resizing to increase the size of the internal widgets (can we do this easily?)
• [ ] Unit tests

Motivation and Context

This is a common motif and we should be able to re-use it in multiple contexts

How Has This Been Tested?

Only interactiveley so far

Where Has This Been Documented?

Only docstrings so far

[ZLLentz]

This is collecting dust. I'm going to make the tests pass, ask for a review, merge, and move the rest of the todo items into an issue.

[ZLLentz]

A big uncommitted comment block I found on my NFS clone, I must have been trying to figure out the remaining bullet points:

+# For showing/hiding individual rows (filter exceptions), we can
+# Add an extra column at the start that unhides when we enter config mode
+# The extra column has a combobox with the show/hide/auto options
+# When we filter, we check this combobox first. Show is always shown, etc.
+# For saving, we can probably just need:
+# - macros for each row in the current logical order
+# - the current logical-visual mapping
+# - the current show/hide/auto
+# - the current filter options
+# For loading, we create the rows from the macros file in order,
+# then move the visual ordering of the header to match the previous mapping.
+# Saving and loading can be in the right-click menu
+# For increasing the size on larger monitors... I have no idea.

[ZLLentz]

Seems to still work using the TMO screen, though the performance isn't great when you have a lot of items and/or ask for new sorts.

[ZLLentz]

Created #70 with follow-up information

[ZLLentz]

This closes #69

[ZLLentz]

Oh man, sorry this is so messy. I'll have to come back to this one before merging I guess... it's really awkward because it's deployed as-is in dev.

[klauer]

I don't think any of what I suggested are really so bad, but rather have places for easy improvements. I'd be totally OK with merging/tagging and letting you circle back to this if/when you get time.

[ZLLentz]

I kind of disagree, I don't like to compromise on code quality. The important thing to cut off here to ensure it gets merged is the scope, not the small tweaks.

[ZLLentz]

Ok, this PR next. To-do:

• Add an example that I can run offline that uses the table widget. If I don't have enough time for unit tests I need to at least make time to run the code again later in a controlled way, and maybe the example will be useful on its own.
• Address all of Ken's review comments

[ZLLentz]

I think I've gotten all the biggest fixes done. I'm going to merge this and move on.