Rename flags and methods

[scott-huberty]

Closes #121
Closes #122

To be in line with our paper:

Current	to	New
flag_ch_sd_ch	➡️	flag_noisy_channels & flags["ch"]["noisy"]
flag_ch_low_r	➡️	flag_uncorrelated_channels & flags["ch"]["uncorrelated"]
flag_ch_bridge	➡️	flag_bridged_channesl & flags["ch"]["bridged"]
flag_ch_rank	➡️	flag_rank_channel & flags["ch"]["rank"]
flag_ch_sd_epoch	➡️	flag_noisy_epochs
flag_low_r_epochs	➡️	flag_uncorrelated_epochs
flag_ic_sd_1	➡️	flag_noisy_ic_epochs

[codecov]

Codecov Report

Merging #152 (f3d3439) into main (6197698) will decrease coverage by 0.14%.
The diff coverage is 93.10%.

@@            Coverage Diff             @@
##             main     #152      +/-   ##
==========================================
- Coverage   78.70%   78.56%   -0.14%     
==========================================
  Files          21       21              
  Lines        1141     1143       +2     
==========================================
  Hits          898      898              
- Misses        243      245       +2     

Files	Coverage Δ
pylossless/config/rejection.py	85.36% <100.00%> (ø)
pylossless/pipeline.py	74.20% <100.00%> (+0.06%)	⬆️
pylossless/flagging.py	63.88% <0.00%> (-0.90%)	⬇️

... and 1 file with indirect coverage changes

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