(DOCSP-35365): Swift: Sync supports in-memory realms

[dacharyc]

Pull Request Info

Jira ticket: https://jira.mongodb.org/browse/DOCSP-35365

• Configure & Open a Realm: Note that as of 10.46.0, you can use in-memory realms with syncConfiguration.
• Configure & Open a Synced Realm: New "Open a Synced Realm In Memory" section with details and a tested, Bluehawked code example.

Reminder Checklist

Before merging your PR, make sure to check a few things.

• [x] Did you tag pages appropriately?
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• [x] Describe your PR's changes in the Release Notes section
• [x] Create a Jira ticket for related docs-app-services work, if any

Release Notes

• Swift SDK
  • Realm Files/Configure & Open a Realm: Note that as of 10.46.0, you can use in-memory realms with syncConfiguration.
  • Sync Data/Configure & Open a Synced Realm: New "Open a Synced Realm In Memory" section with details and a tested, Bluehawked code example.

Review Guidelines

REVIEWING.md

[github-actions[bot]]

Readability for Commit Hash: 758f39d34d9c669570b8b8893465f7fd16c72c2a

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

Readability scores for changed documents:

• source/sdk/swift/sync/configure-and-open-a-synced-realm: Grade Level: 7.7, Reading Ease: 65.42
• source/sdk/swift/realm-files/configure-and-open-a-realm: Grade Level: 10.8, Reading Ease: 41.16

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.

[docs-builder-bot]

✨ Staging URL: https://docs-mongodborg-staging.corp.mongodb.com/realm/docsworker-xlarge/master/

🪵 Logs

• job log: c89a9556b7b2c0ff9b7ca07101df4eb1b522365a