feat: Custom Default Search Keywords

[kipuki]

Summary

This PR introduces the ability for users to customize the default keywords appended to game titles. This feature was originally suggested in Issue #30 , and I wanted to contribute since it's also something I personally found useful.

Changes

• TextInputModal was created as an extension to ConfirmModal to allow users to make add text inputs. This is used to allow the user to change the default keywords.
• Cleaned up unused imports
• Added English localization and placeholders for other languages.
• I believe it was necessary to change the way the change theme page was structured such that the parent would manage the state. This simplified manipulating the input value that the child textbox utilizes.
• Added search keywords as a configurable setting. Updated the script to merge saved settings with defaults to prevent bugs when new defaults are introduced:

// Merge default with saved settings to account for newer additions.
const newSettings = { ...defaultSettings, ...savedSettings };
setSettings(newSettings)

Notes

I am still relatively new to TypeScript, but I really wanted to contribute to the project as it is one of my favorite plugins. Please let me know if there is anything you'd like me to change or improve! I hope to contribute more soon!