Input element properties

[sjorsdonkers]

Depends on: lightpanda-io/libdom#28

https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement
Properties that are implemented by Netsurf, not deprecated, and not inherited from HTMLElement.

With these we probable have enough examples to make a generic implementation, for that note that there are some special cases:

• Some netsurf properties are deprecated
• Netsurf does not support all properties
• Some properties are inherited through the prototype chain
• Some properties have default values if the netsurf says null or the unsigned version of -1
• The initial value and the default value do not need to be the same. init -1 default 0 for example.
• The set and get types may be different get may return -1 i32, but set must be positive u32
• Some specific values instead of defaulting throw an error.
• Sometimes the Set functions is not implemented bynetsurf even if the property is not readonly
• The default initialization and reverting to default on bad value assignment also needs to work for Element.setAttribute and Element.getAttribute
• Values may related default value properties used until the value itself is set.
• src properties need to be stiched with the pages url.
• Netsurf may create more DOM events than defined by the spec upon setting a property without using setAttribute. TBD

PR created to make Playwright page.getByRole work.

[karlseguin]

No tests (should have), but this case wrongly fails:

.{ "document.createElement('input').type", "text" }

Assuming it would also fail with the HTML <input>, then it's realistically important enough to fix I think.

Any other wrong defaults should at least be documented, but probably also fixed.

[sjorsdonkers]

@mookums stitch should probably work with spaces -> %20 and such