quick search: sort toggles for the dropdown results (stacked on #1563)

[samyk]

This is stacked on #1563 (live dropdown search honors regex, extensive and field options) and contains its commit; please review that one first. Once it is merged this PR will only show its own changes. Both touch part_search_controller.js, TypeaheadController and PartRepository, which is why it is built on top instead of beside it.

The quick search dropdown always lists its results by name. With a few hundred matches the one you want is often far down, and the only way to get another order is to submit the search and sort the results table.

This adds a small row of toggles to the header of the dropdown to order the results by: name, manufacturer, supplier, created date, last modified date, top-level category, or category.

• First click sorts ascending, a second click descending, a third returns to the default order. Only one is active at a time; the active one is filled in the primary color with a direction arrow.
• Clicking a toggle keeps the focus in the search field and the dropdown open; the results refresh in place. Keyboard navigation of the results is unchanged.
• The choice is remembered in localStorage and shared by the navbar and homepage search fields.
• When ordered by something a result does not show anyway (manufacturer, supplier, a date, the top-level category), each result shows that value on its own line, marked with the ordering's icon.
• Submitting the search opens the results table in the same order for name, manufacturer, created date, last modified and category. A URL-requested order takes precedence over the saved table state and does not overwrite it.

Server side:

• The typeahead endpoint takes sort and sort_dir; an unknown sort falls back to the default. NULLs sort last in both directions, ties by name and then id.
• Supplier is the alphabetically first supplier name across the part's order details.
• The top-level category is not stored, so it is resolved in PHP from the matching parts' category ids plus one query for the category tree.
• PartSearchSort holds the sort keys, the request parsing and the mapping to a results table column.

The toggle arrow always takes its space and is only made visible on the active toggle, so the toggles do not move when one is chosen.

Ten new strings in frontend.en.xlf (the JS translator only reads that domain).

Notes for review:

• Supplier and top-level category do not carry over to the results table, as the table has no such columns; it opens name-sorted for those. parts table: supplier and supplier part number columns #1574 adds a sortable supplier column, after which mapping it is one line in PartSearchSort::getTableColumn().
• The dropdown only fetches the first 100 matches, so the sort covers those.
• Tested on sqlite with ~18k parts (every key in both directions in about 0.03-0.1 s); MySQL and PostgreSQL run in CI but were not exercised by hand.
• Top-level category is compared case-insensitively in PHP, while the other text orderings follow the database's NATSORT setting.
• The toggles only show once the dropdown has results.

[codecov]

Codecov Report

❌ Patch coverage is 22.09945% with 141 lines in your changes missing coverage. Please review.
✅ Project coverage is 64.18%. Comparing base (a27ebb9) to head (172b60b).
⚠️ Report is 29 commits behind head on master.

Files with missing lines	Patch %	Lines
src/Repository/PartRepository.php	1.88%	104 Missing ⚠️
src/Controller/TypeaheadController.php	15.62%	27 Missing ⚠️
src/DataTables/Filters/PartSearchSort.php	30.76%	9 Missing ⚠️
src/Controller/PartListsController.php	83.33%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1585      +/-   ##
============================================
+ Coverage     62.97%   64.18%   +1.21%     
- Complexity    10071    10270     +199     
============================================
  Files           748      763      +15     
  Lines         32315    32868     +553     
============================================
+ Hits          20351    21097     +746     
+ Misses        11964    11771     -193     

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[samyk]

Example of default search vs sorted search (my mouse is over the Supplier icon in the 2nd image, but doesn't show up in screenshot, hence the alt text and colored icon). The sorted value also shows up in the parts when enabled (sometimes I want to find things I most recently purchased for example)

[jbtronics]

Thats a cool feature.

I fixed the styling of the buttons, improved code structure, and optimized the code to avoid sorting in PHP (we can directly request entities sorted by a list of ids from the database)