Support for new liquidity provider (tonco)

[Ho3einWave]

This pull request includes several changes to improve the functionality and code quality of the Swap component and related stores. The most important changes include adding support for a new liquidity provider, improving the asset filtering logic, and updating various code formatting and imports.

Support for new liquidity provider:

• lib/store/events.store.ts: Added 'tonco' as a new value for the dex type in the onSwap event.
• lib/store/options.store.ts: Added 'tonco' and 'omniston' as new values for the liquidity_provider type in SwapOptions. Updated the default liquidity_provider to 'mytonswap' and added logic to initialize the MyTonSwapClient with the specified liquidity provider. [1] [2] [3]
• lib/store/swap.store.ts and lib/store/wallet.store.ts: Updated the initialization of MyTonSwapClient to remove the baseUrl parameter and set headers with the widget-version. [1] [2]
• lib/utils/swap.ts: Removed the baseUrl parameter from the MyTonSwapClient initialization and set headers with the widget-version.

Asset filtering improvements:

• lib/components/SwapCard/CardDialog.tsx: Refactored the asset filtering logic to handle invalid addresses gracefully and improve search functionality.

Code formatting and imports:

• lib/store/events.store.ts and lib/store/options.store.ts: Updated import statements to use single quotes for consistency. [1] [2]
• lib/store/events.store.ts: Updated console log statements to use single quotes.

Additional story for Swap component:

• lib/components/Swap/Swap.stories.tsx: Added a new story WithLiquidityProvider to demonstrate the Swap component with a liquidity provider.

Styling improvements:

• lib/components/Swap/Swap.scss: Set the background of buttons to transparent.