documentation: Provide simple examples of using the obsidian api

[airtonix]

Rendering react is all good, but let's show some real value by giving some examples of how to interact with the Obsidian API:

• Render a modal with a form
• Collecting user input
• Creating a new note
• Query the Obsidian Note Graph

Some other basic patterns:

• async load CDN stylesheet
• async load CDN scripts

[johtso]

Would love to see some examples like this! I love the idea of being able to write a page using react, but it's not clear how I hook into the rest of my data. Can I integrate this with dataview for example?

Also, when I render text using my react component, can I make it get interpreted as markdown so that things like links to other pages and hashtag links work?

[objectiveSee]

I would love those examples too!