feat: Add edit, confirm, and cancel confirmation to tmpo manual

[DylanDevelops]

Pull Request Checklist

• I have read and followed the contribution guidelines.
• My pull request targets the main branch of tmpo.
• I have tested these changes locally on my machine.

Closes #84

Description

This pull request refactors the manual time entry creation flow in cmd/entries/manual.go to improve user experience and make the process more interactive. The main change is the introduction of a loop that allows users to review a summary of their entry and edit fields before confirming, along with improved handling of prompts and input defaults. The code is also reorganized for clarity and robustness.

User Experience Improvements:

• Added an interactive loop for manual entry creation, allowing users to review a summary of their entry and choose to confirm, edit, or cancel before finalizing. Entry summary includes project, times, duration, description, milestone, hourly rate, and earnings.
• Enhanced prompts for all fields (project, start/end date and time, description, milestone) to show previous values as hints, support editing, and preserve user input across edits.

Code Robustness and Organization:

• Moved database initialization and config loading to the start of the command, ensuring resources are available throughout the entry process.
• Improved error handling and input validation for prompts, parsing, and milestone selection, providing clearer feedback and preventing invalid entries. [1] [2]

Consistency and Output Formatting:

• Standardized currency formatting for hourly rate and earnings to always use the global config’s currency setting.

Screenshots