The iconic release

• Migrated from rye to uv for development management. (#71)
• Added Python 3.14 as a tested/supported Python version. (#72)
• Added textual_fspicker.Icons so that the user of the library can set their own icons that are displayed next to directory entries. (#74)
• Added support for suggested completions when typing paths into the FileOpen and FileSave dialogs. (#76)