Redesign and improve slider widgets

[mattpap]

This PR replaces noUiSlider-based implementation of slider widgets with an "in-house" implementation. This is an early work in progress that preserves (so far) most of the original functionality, improves and simplifies styling, reuses bokehjs' components like tooltips and implements more types sliders.

This PR also adds rudimentary support for property overrides, like:

class BaseSlider(Model):
  value = Any()
class NumberSlider(BaseSlider):
  value = Override(Float())

Example showing normal and stealth sliders:

Example showing customization via stylesheets (see examples/styling/widgets/color_sliders.py):

Screencast.from.27.11.2023.00.44.19.webm

• fixes Sleaker Sliders #10081
• fixes Add support for ticks and tick labels to sliders #13513
• fixes Settting step property of Slider in Python doesn't update the step in Javascript correctly #7772
• fixes Ability for sliders to have log scale #8012
• fixes Allow slider to work on reverse range #9015
• fixes Vertical slider changes height on interaction #8797
• fixes Vertical sliders' appearance is broken #10444
• fixes DateRange Slider ToolTip getting cut off by adjacent plot #7117
• fixes [BUG]RangeSlider does not handle integer precision #9012
• fixes [FEATURE] Improve mobile usability on Bokeh sliders #11860

[codecov]

Codecov Report

Attention: Patch coverage is 97.95918% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 92.65%. Comparing base (d9a2f7a) to head (5930ea7).

Additional details and impacted files

@@             Coverage Diff             @@
##           branch-3.5   #13551   +/-   ##
===========================================
  Coverage       92.65%   92.65%           
===========================================
  Files             326      326           
  Lines           20734    20759   +25     
===========================================
+ Hits            19211    19235   +24     
- Misses           1523     1524    +1     

[jbednar]

Can the text value be editable, if enabled? Can we have both hard and soft bounds? #9943

[mattpap]

Can the text value be editable, if enabled? Can we have both hard and soft bounds? #9943

Eventually yes. One of the goals of this work is to allow such features to be implemented, but that will happen in follow-up work.