[Feature request]: Missing documentation pages

[laserkelvin]

Feature/behavior summary

A number pages are still missing that describe pretty basic functionality for matsciml. This issue is being used to track those pages so we don't forget.

• The "How do I" page is a stub - there's only model loading right now, but can be expanded to multitask stuff.
• Training pipeline page is mostly blank. This should describe the task interface.
• Datasets page is missing an OQMD entry
• Missing unified references page - would be good to consolidate all the references we have for every model, dataset, technique in one page.
• Not all autogenerated docs have detailed docstrings; the method docstring is not being used by #285
  • Models (description of architecture, expected transforms, etc.)
  • Transforms (expected arguments)
  • Tasks
• Documentation for how to write documentation :) closed by Contributing instructions #281
• Inference tasks
  • Embedding generation
  • ASE interface
  • General testing workflow without averaging (i.e. pair plot of actual vs. predicted)
• A list of commonly tweaked parameters and how to tweak them in the experiment CLI #282

Request attributes

• Would this be a refactor of existing code?
• Does this proposal require new package dependencies?
• Would this change break backwards compatibility?
• Does this proposal include a new model?
• Does this proposal include a new dataset?
• Does this proposal include a new task/workflow?

Related issues

No response

Solution description

Write the docs :P

Additional notes

No response