Add trusted mouseClick command to WPT

[MaryamHuntsperger]

Existing click and clickAndWait WPT commands are JavaScript initiated events which are synthetic. Hence "Trusted" flag for JS events is set to false. Such events get ignored by EventTiming API (https://www.w3.org/TR/event-timing/). This problem was issued catchpoint/WebPageTest#3048

Moreover, WPT click command does not support right and double click; mentioned in catchpoint/WebPageTest#3049 .

We have created a new mouseClick command with the following format which supports left, right and double click:
mouseClick [tab] Id| selector [tab] left|right|double

The new command uses Devtools Protocol (https://chromedevtools.github.io/devtools-protocol/tot/Input/) input domain to dispatch Trusted mousepressed and mousereleased events.

[arthesh]

Tagging @mjkozicki , @claud-io , would appreciate if you could review this PR and provide feedback. This should be a useful command to run true interactivity tests with Event timing metrics.

[MaryamHuntsperger]

@pmeenan / @vibaldem FYI, this PR is for catchpoint/WebPageTest#3048 and catchpoint/WebPageTest#3049 .

[MaryamHuntsperger]

@pmeenan, please take a look.

[pmeenan]

LGTM (though I don't have merge permission)

[MaryamHuntsperger]

@mjkozicki would appreciate if you could review this PR and provide feedback; this is to address catchpoint/WebPageTest#3048 and catchpoint/WebPageTest#3049 .

[jspurlin]

@claud-io / @lbartoli79 can you review this PR, it's been pending for 5 months 😮

Thanks!

[claud-io]

@jspurlin will try to schedule this for the upcoming weeks

[MaryamHuntsperger]

When will this PR be merged?

[lbartoli79]

@MaryamHuntsperger Going to merge agent now, but some adjustments to UI are needed for this to work. Documentation must be updated too.