[Feature] Fill input field based on label text

[torkjels]

When an input field is properly connected to a label it would be nice to be able to fill the input field based on the label text using await page.fill('text=Name', 'John Doe');.

It's often possible to fill the input field based on a CSS selector like id or name, but making it possible to fill by label text would make it more straight-forward to both read and write the test. Especially if you write tests for screens you did not make yourself.

Examples of cases where it should work:

<label for="input1">Name</label>
<input id="input1" value="">

<label>Name <input value=""></label>

[Snooz82]

i think in general label= could be a nice selector strategy.
I would feel comfortable to mix it with general Text selector, because then it would be possible anymore to select the tag itself with the "Text" selector.

i would also not limit it to fields!
Labels can be used on:

<input>
<meter>
<progress>
<select>
<textarea>