ENH: simple HTML representation for LosslessPipeline

[scott-huberty]

Now, this is what displays when calling a LosslessPipeline instance:

Which can be uncollapsed:

FlaggedChs and FlaggedICs now have nicer __repr__'s too:

[codecov[bot]]

Codecov Report

Merging #146 (160054c) into main (0927ded) will increase coverage by 1.52%. The diff coverage is 95.08%.

@@            Coverage Diff             @@
##             main     #146      +/-   ##
==========================================
+ Coverage   68.33%   69.86%   +1.52%     
==========================================
  Files          14       16       +2     
  Lines         960     1012      +52     
==========================================
+ Hits          656      707      +51     
- Misses        304      305       +1     

Files	Coverage Δ
pylossless/__init__.py	100.00% <100.00%> (ø)
pylossless/dash/__init__.py	100.00% <100.00%> (ø)
pylossless/pipeline.py	74.34% <100.00%> (+1.63%)	:arrow_up:
pylossless/utils/__init__.py	100.00% <100.00%> (ø)
pylossless/utils/_utils.py	100.00% <ø> (ø)
pylossless/utils/html.py	95.83% <95.83%> (ø)
pylossless/flagging.py	64.78% <71.42%> (+0.50%)	:arrow_up:

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more

[scott-huberty]

@christian-oreilly FYI in response to our discussion, the difference between __repr__ and __str__ dunder methods is that you would have to explicitly call print(pipeline.flags["ch"]) for the __str__ string representation to display. So in this case __repr__ is the right call, so that the string representation displays when you call the pipeline.flags["ch"].

[scott-huberty]

self merging since this is mainly aesthetic.