[Feature Request] Show file path for saved files

[iamkartiknayak]

Issue/Description:
COSMIC Edit does not clearly show the full path of a file once it has been saved. Displaying the file path would help users quickly understand where the file is located, especially when working with multiple files of same name in different dirs.

Expected Behavior:

• The full file path (or at least the directory path) should be visible after saving
• The path should update if the file is saved to a different location (Save As)

Other Notes:

• This is particularly useful when working outside a project view
• The path could be shown in the status bar with more info such as rows, cols, LSP status if implemented in future, etc