- Renamed API to create QR scanner plugin and other related issue

[Kashif-E]

This pull request includes several changes aimed at improving the composability and efficiency of the ImageSaverPlugin and QRScannerPlugin modules. The most important changes involve renaming factory functions to use the remember pattern, updating the corresponding documentation, and removing unnecessary imports.

Improvements to composability:

• ImageSaverPlugin/src/commonMain/kotlin/com/kashif/imagesaverplugin/ImageSaverPlugin.kt: Renamed the createImageSaverPlugin function to rememberImageSaverPlugin and updated the corresponding documentation. [1] [2]

• qrScannerPlugin/src/commonMain/kotlin/com/kashif/qrscannerplugin/QRScannerPlugin.kt: Renamed the createQRScannerPlugin function to rememberQRScannerPlugin and updated the corresponding documentation.

Documentation updates:

• README.MD: Updated the usage examples to reflect the new rememberImageSaverPlugin and rememberQRScannerPlugin function names.

Code cleanup:

• Sample/src/commonMain/kotlin/org/company/app/App.kt: Removed unused imports and updated the plugin instantiation to use the new remember functions. [1] [2] [3] [4]

• qrScannerPlugin/src/commonMain/kotlin/com/kashif/qrscannerplugin/QRScannerPlugin.kt: Removed the debounce parameter from the getQrCodeFlow function to simplify the flow management.- Renamed API to create image saver plugin

• removed debounce from qr flow to be more customizable