feat(cat-gateway): Add OpenAPI Examples and enforce error

[apskhem]

Description

Added OpenAPI Examples and enforce error.

• Added missing examples accordingly.
• Modified the spectral linter rules to mark missing examples from properties and schemas as an error instead of warning.
• Added derive_more with certain enabling features to reduce code boilerplate for implementing newtypes traits.
• Added new types ApiDateTime, Hash128, modified Hash to Hash256.
• Removed unused types service/api/cardano/types.rs as creating newtypes to work with.
• Removed unused files along the way service/common/objects/cardano/registration_info.rs and service/common/objects/cardano/sync_state.rs.
• Resolved 🛠️ [TASK] : Recheck validation value #239

Related Issue(s)

Closes #1783

Please confirm the following checks

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream module

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 467/467}$ | ${\color{red}Fail: 0/467}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 467/467}$ | ${\color{red}Fail: 0/467}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 467/467}$ | ${\color{red}Fail: 0/467}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 467/467}$ | ${\color{red}Fail: 0/467}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 475/480}$ | ${\color{red}Fail: 0/480}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 475/480}$ | ${\color{red}Fail: 0/480}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 475/480}$ | ${\color{red}Fail: 0/480}$ |

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 487/492}$ | ${\color{red}Fail: 0/492}$ |