Last call for missing budget item cost estimates

[Ilmari Lauhakangas <ilmari.lauhakangas@xxxxxxxxxxxxxxx>]

These are still missing a cost estimate in case someone wants to help:

https://wiki.documentfoundation.org/Development/Budget2023#Add_more_combo_chart_types
https://wiki.documentfoundation.org/Development/Budget2023#Migrate_from_Carbon_to_Cocoa_framework_on_Mac
https://wiki.documentfoundation.org/Development/Budget2023#Refactor_font_handling_on_Mac
https://wiki.documentfoundation.org/Development/Budget2023#Document_Comparison_bugs_and_enhancements
https://wiki.documentfoundation.org/Development/Budget2023#Application_Themes_.28formerly_known_as_Mozilla_Persona.29
https://wiki.documentfoundation.org/Development/Budget2023#Styles_Highlighter
https://wiki.documentfoundation.org/Development/Budget2023#Writer_document_with_tables_that_use_style_loses_formatting_on_adding_or_deleting_a_row
https://wiki.documentfoundation.org/Development/Budget2023#Automated_test_tools_for_finding_text_rendering_defects

Ilmari