Add RTL (Right-to-Left) text support for Persian, Arabic, and Hebrew languages

[bachmetal]

Problem

Currently, OpenBubbles does not properly support RTL (Right-to-Left) languages such as Persian (Farsi), Arabic, and Hebrew. When typing in these languages, the following issues occur:

• Text characters appear in reverse order
• Punctuation marks and numbers are misaligned
• Message bubbles and input fields do not respect RTL text direction
• Overall chat layout does not adapt to RTL locale settings

Expected Behavior

When typing in RTL languages, the app should:

1. Display text correctly with proper character joining (especially for Persian/Arabic)
2. Align text direction from right to left
3. Position punctuation and mixed LTR/RTL content correctly
4. Maintain proper layout direction for message bubbles when appropriate

Additional Context

RTL support is essential for millions of users in Middle Eastern and Persian-speaking regions. This feature would make OpenBubbles accessible to a much broader audience.