After the update `TestCoroutineDispatcher`, `TestCoroutineScope` and
`runBlockingTest` are deprecated.
Instead of these new `TestDispatcher`, `TestScope` and `runTest` APIs are used.
Took the oportunity to also replace most of the `runBlocking` calls with the
new `runTest` specially designed for running coroutines in tests API.
Default will be disabled with users having the possibility to enable this from
a new setting in the `Privacy and security` section.
If enabled then by default this force https for all tabs with the option for
users to switch to forcing https only on private tabs.
* Consume Nimbus FML plugin
* Convert Homescreen to use FML
* Convert nimbusValidation to use FML
* Convert legacy experiments to use the feature API and FML
Remove dead helper code and documentation
* Fixup failing test
Co-authored-by: Grisha Kruglov <gkruglov@mozilla.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
