Base functionality, sphinx and PyPi config

[AmeerHamoodi]

This PR includes all of the base EEGPhasePy functionality:

• Autoregressive phase estimation
• Educated temporal prediction phase estimation
• Bayesian optimization of AR phase estimation parameters
• Genetic optimization of AR phase estimation parameters
• Accuracy calculation of target vs true phase
• Mean and standard deviation for triggers
• Trigger window waveform plots
• Polar histogram to visualize accuracy of phase estimation performance

API reference is also included in this PR using the readthedocs template

[AmeerHamoodi]

This file will be removed after I've created the examples for EEGPhasePy usage. Keeping it here for now for reference

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[christianbrodbeck]

Added some generic comments. For more detailed review, could you fill in the sphinx API documentation page, and add some usage examples? Sphinx-gallery may work well.

[AmeerHamoodi]

Just partial, but wanted to let you know my comments so far. Will continue when I get another chance.

Thanks @christianbrodbeck, I've updated the PR based on your comments

[mus1223]

Left comments for sections: EEGPhasePy installation, ETP-based phase estimation, and the Alpha phase estimation using ETP pages.
For installation, main points are describing prior packages needed, and ensuring latest version of eegphasepy installs with provided command.
For ETP-based phase estimation page, main points are ensuring operability with Python 3.10 (or disclaimer to upgrade), some formatting notes, and additional recommendations to add.
For Alpha phase estimation using ETP page, main points are to reduce redundancy of repeating same code blocks, and displaying the expected figures with interpretation.

[mus1223]

Review done for the following pages:
Alpha phase estimation using ETP
Autoregressive phase estimation
Bayesian optimization of PHASTIMATE parameters
Genetic optimization of PHASTIMATE parameters
Alpha phase estimation using PHASTIMATE
Optimizing PHASTIMATE parameters

Some main points are adding further explanation/rationale when needed, adding the output figures/stats themselves on to the tutorial along with their explanation, some potential inaccuracies with the stats values printed in some examples, and other considerations.

[mus1223]

Completed review for the following pages:
Plotting
Phase estimation statistics
Polar histograms
API reference

Main comments including providing more explanation where needed, typos, and missing information (particularly on API reference page)