Add basic conda-store-ui docs

[pavithraes]

Note: this branch is on top of #685, which should be merged first

Addressed #561 Closes #690

Description

This pull request:

• Migrates conda-store-ui narrative docs from Storybook
• Adds some new tutorials for common end-user operations

Pull request checklist

• [x] Did you test this change locally?
• [x] Did you update the documentation (if required)?
• [ ] Did you add/update relevant tests for this change (if required)? N/A

Additional information

[netlify[bot]]

✅ Deploy Preview for kaleidoscopic-dango-0cf31d ready!

Name	Link
🔨 Latest commit	623d28afdc8853a403587d33730514b40c4dc918
🔍 Latest deploy log	https://app.netlify.com/sites/kaleidoscopic-dango-0cf31d/deploys/657710588367880008b5b7a5
😎 Deploy Preview	https://deploy-preview-694--kaleidoscopic-dango-0cf31d.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.