feat: add createSearchTerms

[calvinbrewer]

• add support for createSearchTerms method on the protectClient to impove the developer experience of encrypting search terms for use with SQL queries

[Copilot]

Pull Request Overview

This PR adds support for a new createSearchTerms method on the ProtectClient to simplify encrypting search terms for SQL queries. Key changes include:

• New type definitions for SearchTerm and EncryptedSearchTerm in types.ts.
• A new SearchTermsOperation in the ffi operations that encrypts an array of search terms.
• Integration of the createSearchTerms method in the ProtectClient along with corresponding tests and documentation updates.

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
packages/protect/src/types.ts	Added type definitions for search term encryption.
packages/protect/src/ffi/operations/search-terms.ts	Implements encryption logic for search terms with special formatting based on return type.
packages/protect/src/ffi/index.ts	Exposes the createSearchTerms method in the ProtectClient API.
packages/protect/tests/search-terms.test.ts	Added tests to validate the functionality for default, composite-literal, and escaped composite literal returns.
docs/reference/supabase-sdk.md	Updated documentation to demonstrate the new API usage.
.changeset/fruity-shoes-talk.md	New changeset note documenting the minor release.