Make HttpLlm.application() function convenient.

[samchon]

This pull request includes changes to support additional OpenAPI and Swagger document versions in the HttpLlm and HttpMigration modules. The most important changes include updating the document type definitions and modifying the migration application composition process.

Support for additional document versions:

• src/HttpLlm.ts: Added imports for OpenApiV3, OpenApiV3_1, and SwaggerV2 to support additional document versions. Updated the document type in the HttpLlm namespace to include these new types. [1] [2]
• src/HttpMigration.ts: Added imports for OpenApiV3, OpenApiV3_1, and SwaggerV2 to support additional document versions. Updated the document type in the HttpMigration namespace to include these new types. [1] [2]

Migration application composition:

• src/HttpLlm.ts: Modified the application method in the HttpLlm namespace to handle the updated document type without casting.
• src/HttpMigration.ts: Modified the application method in the HttpMigration namespace to use OpenApi.convert for document conversion before composing the migration application.

[samchon]

Test OK