fix: f14 proposal schema restructuring

[nathanbogale]

Description

F14 Catalyst Submission Form Schema Restructuring

Overview

This pull request restructures the JSON schema for the F14 Catalyst Submission Form to enhance the form organization, improve user experience, and ensure consistency across the submission process.

Changes

Reorganized segments to follow the new order: schemaReference, Setup, Selected Category, Summary, Project Details, Milestones, Funding Justification, and Acknowledgements
Added comprehensive x-order specifications for all segments, sections, and field groups to ensure consistent UI rendering
Added detailed user guidance (x-guidance) and placeholders (x-placeholder) for all form fields to improve user experience
Moved 'theme', 'translation', and 'open source' sections into the setup segment
Moved 'selected category' to its own top-level segment
Changed category acknowledgements from radio buttons to checkboxes
Moved category-specific acknowledgements into the main acknowledgements segment
Removed references to "proposal" for clarity and consistency
Enhanced validation rules for fields with minimum/maximum value constraints
Added detailed milestone guidance for all milestone sections

Breaking Changes

Renamed several sections, and changed structures

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
• The schema has been validated for proper JSON syntax
• Segment and section structures have been verified for completeness
• Field validation rules have been checked for accuracy

[github-actions]

❌ Test Report | ${\color{lightgreen}Pass: 686/699}$ | ${\color{red}Fail: 8/699}$ |

[neil-iohk]

Verified changes and suggested change pre merge

[minikin]

This PR should not be merged without @dtscalac's approval.

[dtscalac]

The PR needs to wait until #2298 is merged and the tests run on the changes from here.