[docs] - Add examples page for Schedules (DOC-191)

[erinkcochran87]

Summary & Motivation

This PR experiments with adding an Examples page for Schedules. It pulls some examples from the current Schedules concept page and simplifies the explanations to make it easier to skim. The focus of this reference is not to teach users how to do X, but to quickly demonstrate, provide relevant links to jump to, and let them get back to work.

I've added a summary table to each example that contains:

• Any notes, tips, etc. about the example
• Links to related documentation. For example, where the code is used and has a more learning-focused explanation
• A list of APIs used in each example

How I Tested These Changes

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[github-actions[bot]]

Deploy preview for dagster-docs ready!

Preview available at https://dagster-docs-cp4evbh4a-elementl.vercel.app https://erin-doc-191-schedule-examples.dagster.dagster-docs.io

Direct link to changed pages:

• https://dagster-docs-cp4evbh4a-elementl.vercel.app https://erin-doc-191-schedule-examples.dagster.dagster-docs.io/concepts/automation/schedules/automating-assets-schedules-jobs
• https://dagster-docs-cp4evbh4a-elementl.vercel.app https://erin-doc-191-schedule-examples.dagster.dagster-docs.io/concepts/automation/schedules/examples
• https://dagster-docs-cp4evbh4a-elementl.vercel.app https://erin-doc-191-schedule-examples.dagster.dagster-docs.io/concepts/automation/schedules/testing