Optimize the display of the tutorial page and add adjust_legend argument

[Starlitnightly]

The new tutorial could be found in https://dynamo-release-test.readthedocs.io/en/latest/index.html.

1. It is important to note that the notebook for this tutorial depends on dynamo-tutorials, but there are some issues related to submodules. These should be carefully checked before merging.
2. Version 1.4.2 has not yet been officially released, so I have defined the version number as 1.4.2rc1. I am not sure if this version is allowed to be released. Since the adjust_legend parameter depends on version 1.4.2, I have added the adjust_legend parameter to most updated tutorials to optimize the plotting effects.

[Starlitnightly]

#706

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 12.92079% with 1759 lines in your changes missing coverage. Please review.

Project coverage is 37.67%. Comparing base (2293afb) to head (db2a0c4).
Report is 14 commits behind head on master.

Files with missing lines	Patch %	Lines
dynamo/multivelo/old_MultiVelocity.py	8.05%	628 Missing ⚠️
dynamo/multivelo/MultiPreprocessor.py	14.93%	245 Missing ⚠️
dynamo/multivelo/pyWNN.py	9.04%	171 Missing ⚠️
dynamo/multivelo/ATACseqTools.py	10.98%	154 Missing ⚠️
dynamo/multivelo/MultiIO.py	12.42%	141 Missing ⚠️
dynamo/multivelo/old_MultiomicVectorField.py	17.21%	125 Missing ⚠️
dynamo/multivelo/ChromatinVelocity.py	9.55%	123 Missing ⚠️
dynamo/multivelo/MultiQC.py	23.80%	48 Missing ⚠️
dynamo/multivelo/sparse_matrix_utils.py	0.00%	45 Missing ⚠️
dynamo/multivelo/MultiVelo.py	21.62%	29 Missing ⚠️
... and 5 more

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #707      +/-   ##
==========================================
- Coverage   43.59%   37.67%   -5.92%     
==========================================
  Files         161      177      +16     
  Lines       28726    33946    +5220     
==========================================
+ Hits        12522    12788     +266     
- Misses      16204    21158    +4954     

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[Sichao25]

Are we also using this repo for ReadTheDocs instead of dynamo_readthedocs in the future?

[Xiaojieqiu]

@Sichao25 we will need to overwrite the old dynamo_readthedocs