Add DynamoDB connector to Typescript SDK

[sandshoes]

This implements the DynamoDB connector in a functionality mirroring the changes added to the Tinybird Forward CLI.

[Copilot]

Pull request overview

This PR adds first-class DynamoDB connector support to the Tinybird TypeScript SDK, covering schema definitions, file generation, and migration parsing/emission so DynamoDB resources can be defined and migrated similarly to existing Kafka/S3/GCS connectors.

Changes:

• Add defineDynamoDBConnection + DynamoDB connection types and runtime validators.
• Add DynamoDB datasource ingestion config (dynamodb) and enforce “only one ingestion option” across schema/generators/tests.
• Extend migration tooling (parse/emit + CLI migrate validation) and documentation to support DynamoDB connections and datasource directives.

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/schema/datasource.ts	Adds DynamoDBConfig and dynamodb ingestion option with updated ingestion exclusivity check.
src/schema/datasource.test.ts	Updates ingestion-exclusivity error message expectations to include DynamoDB.
src/schema/connection.ts	Adds DynamoDB connection types, defineDynamoDBConnection, and isDynamoDBConnectionDefinition.
src/schema/connection.test.ts	Adds unit tests for DynamoDB connection creation/validation + type guard.
src/migrate/types.ts	Extends migration models to represent DynamoDB datasource + connection resources.
src/migrate/parse-datasource.ts	Parses DynamoDB datasource import directives and maps them into migration models.
src/migrate/parse-connection.ts	Parses TYPE dynamodb connections and validates directive compatibility.
src/migrate/parse-connection.test.ts	Adds migration parser tests for DynamoDB connections and error cases.
src/migrate/emit-ts.ts	Emits TS for DynamoDB connections/datasource ingestion + secret-template detection.
src/index.ts	Exposes DynamoDB connection APIs/types and datasource DynamoDB config type from the SDK entrypoint.
src/generator/datasource.ts	Emits DynamoDB datasource directives (IMPORT_TABLE_ARN, IMPORT_EXPORT_BUCKET) and updates ingestion exclusivity.
src/generator/datasource.test.ts	Adds generator tests for DynamoDB datasource directives and ingestion exclusivity.
src/generator/connection.ts	Emits .connection content for DynamoDB connections.
src/generator/connection.test.ts	Adds generator test for DynamoDB .connection output.
src/cli/commands/migrate.ts	Validates DynamoDB datasources reference a dynamodb connection type during migration.
src/cli/commands/migrate.test.ts	Adds end-to-end migrate tests for DynamoDB connection + datasource directives and validation failures.
README.md	Documents DynamoDB connection/datasource usage examples.

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[rmorehig]

LGTM!