Standardize string resource naming

[amarradi]

String resource names in strings.xml should follow a consistent naming convention to improve maintainability, translation workflow, and overall code readability.

✅ Suggested naming convention:

🔠 Examples:

menu_about
title_edit_note
msg_unsaved_changes

btn_save
hint_note_title
dialog_delete_confirmation

📌 Naming guidelines:

Use lowercase letters and underscores

Avoid camelCase, spaces, or special characters

Structure names by purpose:

title_ → screen titles
btn_ → button text
menu_ → menu items
msg_ → user-facing messages
hint_ → input hints
dialog_ → dialog titles or messages

Optional: Prefix with screen/module name (e.g., editnote_btn_save)