Fix Timetable Pasting

[philip-cline]

Checklist

• Appropriate branch selected (all PRs must first be merged to dev before they can be merged to master)
• Any modified or new methods or classes have helpful JSDoc and code is thoroughly commented
• The description lists all applicable issues this PR seeks to resolve
• The description lists any configuration setting(s) that differ from the default settings
• All tests and CI builds passing

Description

• Enhances data handling when pasting content from the clipboard, such as CSV data, into TEXT type timetable cells (e.g., Trip ID, Trip Headsign). Previously, the data was returned as seconds, which an issue
  
• Improves the handling of carriage return characters that may appear when pasting data from Excel so parseCellValue can parse the correct string inTIMETABLE_FORMATS
• Checks if the parsed value is valid and keeps the original value of the timetable cell instead of returning 00:00:00 for:
  • pasted CSV
  • inputted data in individual cells

[AdrianaCeric]

Thanks for the help @philip-cline @miles-grant-ibigroup

[daniel-heppner-ibigroup]

Lots of logic, good work though!

[philip-cline]

I am mad to be merging this. but it works.