DOCSP-32067: Update Create page for Kotlin

[cbullinger]

Pull Request Info

• Convert existing Read & Write Data landing page to a container page and move content to relevant child pages
• Update existing Create page with missing content and improved code examples using updated object models

Jira

• https://jira.mongodb.org/browse/DOCSP-32067

Staged Changes

• Create Realm Objects - Kotlin SDK - updated page
• Read & Write Data - converted to container page

Reminder Checklist

If your PR modifies the docs, you might need to also update some corresponding
pages. Check if completed or N/A.

• Create Jira ticket for corresponding docs-app-services update(s), if any
• Checked/updated Admin API
• Checked/updated CLI reference

Review Guidelines

REVIEWING.md

[github-actions]

Readability for Commit Hash: b7d0769

You can see any previous Readability scores (if they exist) by looking
at the comment's history.

Readability scores for changed documents:

• source/sdk/kotlin/realm-database: Grade Level: 11.4, Reading Ease: 39.53
• source/sdk/kotlin/realm-database/crud: Grade Level: 16.8, Reading Ease: 9.38
• source/sdk/kotlin/realm-database/schemas/relationships: Grade Level: 11.8, Reading Ease: 44.03
• source/sdk/kotlin/realm-database/schemas/supported-types: Grade Level: 12.1, Reading Ease: 37.81
• source/sdk/kotlin/realm-database/schemas/define-realm-object-model: Grade Level: 11.1, Reading Ease: 45.86
• source/sdk/kotlin/realm-database/crud/create: Grade Level: 10.6, Reading Ease: 46.98

For Grade Level, aim for 8 or below.

For Reading Ease scores, aim for 60 or above:

Score	Difficulty
90-100	Very Easy
80-89	Easy
70-79	Fairly Easy
60-69	Medium
50-59	Fairly Hard
30-49	Hard
0-29	Very Hard

For help improving readability, try Hemingway App.

[krollins-mdb]

@cbullinger, nice work on this page! I love seeing everything in one place. I don't have any comments on the larger structure of the page, but I do have a bunch of minor suggestions throughout. I don't think any of them alone or even all of them together are blockers.

[docs-builder-bot]

✨ Staging URL: https://preview-mongodbmongodb.gatsbyjs.io/realm/master/

🪵 Logs

• job log: 977eae5bd751e756b5be1fbb58f3742ae3bd414a