Add support for msedge channels

[Meir017]

Follow-up on #7389.

similar to playwright's ability to use specific edge executables.

the ability to launch msedge:

await puppeteer.launch({
    channel: 'msedge'
});

see https://github.com/microsoft/playwright/blob/main/packages/playwright-core/src/server/registry/index.ts

[jrandolf]

This is not feasible since we cannot guarantee the msedge version uses the same upstream version of chromium. In particular, if we used any random latest version, we could not guarantee Puppeteer will work (hence we will get bug reports out of our control).