Feat/pals

[Mukhammadali]

Description

Changes:

• Introduced PalsScreen with support for creating and managing AI assistants and roleplay characters
• Added new components for Pals creation: AssistantPalSheet, RoleplayPalSheet, ModelSelector, FormField
• Implemented PalStore for managing Pals data with persistence
• Added new icons and updated existing components to support Pals functionality
• Integrated Pals into navigation and sidebar
• Updated theme and styling to support new Pals-related UI elements

Fixes #150

Platform Affected

• iOS
• Android

Checklist

• Necessary comments have been made.
• I have tested this change on:
  • iOS Simulator/Device
  • Android Emulator/Device
• Unit tests and integration tests pass locally.

[a-ghorbani]

• Test fails due to: Jest: "global" coverage threshold for branches (60%) not met: 57.3%
• We need to add 'delete' functionality for Pals.
• [Bug] Edit pals – previous values do not persist when navigating away and returning to the Pals screen.
• Roleplay prompt generator doesn't use models stop words
• Add chevron to model selectors
• Add text to the model selector indicating which models are best for prompt generation.
• When there are many palls or downloaded models the sheet doesn't scroll up enough.
• Add stop for ai prompt generator.