text: Title: Comprehensive Documentation of Supported Input Formats
  Body: ## Goal
  To provide clear and comprehensive documentation detailing the support status for various input formats like JsonSchema and OpenAPI, including different drafts like Draft 7 and Draft 2019-09, to help users understand the extent to which they can utilize datamodel-code-generator with different specifications.
  
  ## Background
  The current documentation needs more detailed information on the support status of various input formats. Users may need help understanding what aspects of JsonSchema or OpenAPI are supported, especially concerning different drafts. This lack of clarity could hinder the utilization of datamodel-code-generator to its full extent.
  
  ## Suggested Documentation Structure:
  ### Supported Input Formats:
  List of all supported input formats with a brief description.
  ####  JsonSchema:
  Support status for Draft 7, Draft 2019-09, etc.
  Any known limitations or workarounds.
  ##### OpenAPI:
  Support status for versions 3.0, 3.1, etc.
  Any known limitations or workarounds.
  
  ## Related Issues
  https://github.com/koxudaxi/datamodel-code-generator/issues/1578