Enhance portfolio filtering and trimming options in app.py: introduce expandable sections for filter and trimming options, update portfolio trimming logic to support geomean calculations, and improve export functionality with stack count adjustments.

Fix index access and row dropping logic in trim_portfolio function in global_func/trim_portfolio.py for improved accuracy and performance.

Refactor trim_portfolio function in global_func/trim_portfolio.py: improve index handling and streamline row dropping logic for better performance.

Refactor trim_portfolio function in global_func/trim_portfolio.py: optimize iteration logic for filtering portfolios based on ownership type.

Add 'Trim Portfolio' button in app.py and implement trim_portfolio function in new global_func/trim_portfolio.py