feat(config): build APIs and tests for configs

[niyasrad]

Description

• Feature Request

Tasks

• feat(config): create API, tests and verification #26
• feat(config): delete API, tests and verification #30
• feat(config): read API, tests and verification #38
• feat(backend): Update config API #42
• feat(config): read, list APIs and tests #40

Details

• Feature Description: To have a complete base v1 API, we will need configs
  • A config goes under the config_definition - where config_definition is the template.
  • Take the standards and folder structure for config_definition and replicate the following
    • CRUDL API for config
    • Utilities - validation, queries and utils
  • Test the utilities and functions written and ensure all test cases pass.
  • Make sure to write border/edge cases for the utilities