(DOCSP-39519): Port Swift Filter Data page for consolidated docs (#3349)

## Pull Request Info - SDK Docs Consolidation

Jira ticket: https://jira.mongodb.org/browse/DOCSP-39519

This is a port of the existing Swift page - we decided to maintain these
SDK-specific query engines as one-off pages because they are too
dissimilar to consolidate. I have updated the Realm naming and refs to
use the `sdk` ref targets.

I switched from the Realm languages tab group to the Drivers tab group,
so if someone has selected "Swift" or "Objective-C" from another page, I
believe the selection should carry over. There are some examples that
don't exist or apply in the other language, so if you have selected
"Swift" you will still see some Objective-C examples in the NSPredicate
part of the page, and if you have selected Objective-C, you will still
see the entire Swift Type-Safe Query API and some Swift examples in the
NSPredicate part of the page. I don't plan to go back and address these
or add "missing example" placeholders, because it's the same behavior as
the existing page. But I could be convinced otherwise if a reviewer
feels strongly.

*Staged Page*

- [Type-Safe and NS Predicate
Queries](https://preview-mongodbdacharyc.gatsbyjs.io/realm/DOCSP-39519/sdk/crud/query-engines/filter-data-swift-sdk/)

*Page Source*

Add links to every SDK's pages where you got the SDK-specific
information:

- [Swift: Filter
Data](https://www.mongodb.com/docs/atlas/device-sdks/sdk/swift/crud/filter-data/)

### PR Author Checklist

Before requesting a review for your PR, please check these items:

- [x] Open the PR against the `feature-consolidated-sdk-docs` branch
instead of `master`
- [x] Tag the consolidated page for:
  - genre
  - meta.keywords
  - meta.description

#### Naming
- [x] Update Realm naming and the language around persistence
layer/local/device per [this
document](https://docs.google.com/document/d/126OczVxBWAwZ4P5ZsSM29WI3REvONEr1ald-mAwPtyQ/edit?usp=sharing)

#### Links and Refs
- [x] Create new consolidated SDK ref targets starting with "_sdks-" for
relevant sections
- [x] Remove or update any SDK-specific refs to use the new consolidated
SDK ref targets

### Reviewer Checklist

As a reviewer, please check these items:

- [x] Realm naming/language has been updated
- [x] All relevant content from individual SDK pages is present on the
consolidated page

source/includes/tip-realm-query-language-reference-examples.rst

@@ -2,5 +2,5 @@
 
    You can also find useful Realm Query Language examples on the following pages:
 
-   - :ref:`iOS Query Examples <ios-client-query-engine>`
+   - :ref:`iOS Query Examples <sdks-filter-data-swift>`
    - :ref:`Node.js Query Engine <node-client-query-engine>`