refactor(tools): simplify tool names, add unique identifiers, and improve file tool capabilities

[mlikasam-askui]

Summary

• Simplified tool names by removing platform prefixes (e.g., computer_screenshot → screenshot, android_tap_tool → tap_tool)
• Added unique instance identifiers to tools to prevent name collisions when multiple tool instances exist
• Added new LoadImageTool for loading and analyzing images from the filesystem
• Improved file tool flexibility by accepting both str and Path types for base directory

Changes

Tool Naming Refactor

• Removed redundant prefixes from tool names across computer and Android tools
• Added unique ID generation to Tool base class using UUID
• Updated assistant seed configurations to reference new tool names

File Tools Improvements

• LoadImageTool: New tool for loading images with automatic scaling
• ReadFromFileTool: Added configurable encoding fallback (encoding_to_try parameter)
• WriteToFileTool: Improved description with dynamic base directory info
• ListFilesTool: Updated for consistency with other file tools
• All file tools now accept str | Path for base_dir parameter