feat: Password logic

[matthme]

Adds 3 different password modes password-optional, password-requiredand no-password with associated splashscreens.

[c12i]

I know a lot of effort has gone in creating the html pages, but seeing how the complexity has greatly increased, I think using Svelte instead of Js here would be much better and easier to maintain, cleaning up event handlers that are added but never removed, reactive state management rather than direct DOM manipulation, and giving us more declarative and maintainable code.

This would also help with testing and debugging, while reducing the potential for bugs by handling component cleanup.

What do you think?

[matthme]

using Svelte instead of Js here would be much better and easier to maintain

During refinement it was decided that we should stick with vanilla JS for now to keep it agnostic of a specific framework but I agree that it is considerable complexity and rather error prone to handle all the state in plain js. So I'm not generally opposed to choose a specific framework for this (my preference would be lit, simply because I'm most familiar with it, but svelte would be okay too) but we should maybe hear other opinions as well...

[c12i]

During refinement it was decided that we should stick with vanilla JS

I see, I think if more functionalities similar to this get added, then it would definitely warrant this change. Good enough for now.

So I'm not generally opposed to choose a specific framework for this (my preference would be lit, simply because I'm most familiar with it, but svelte would be okay too) but we should maybe hear other opinions as well...

No worries, definitely something that can be discussed separately. I suggested svelte since thats the framework launcher uses, and perhaps there could be some code from that project that could be used here