🏗 Replace logging in gulp bundle-size with output from filesize

[rsimha]

This PR replaces the custom logging in gulp bundle-size with the built-in output from filesize. With this, we standardize bundle-size output as follows:

Local development:

CI builds:

Directly running filesize:

• TODO: merge and publish Expose NoTTYReport and silent for use by amphtml filesize#127 first, then use the new version of filesize in this PR

Companion PR to ampproject/filesize#127
Addresses #32476 (comment)

[kristoferbaxter]

Thanks for fixing this up! Does this make the default on_local_build?

[kristoferbaxter]

@rsimha An updated version of filesize was published with the necessary change.

[rsimha]

Thanks for fixing this up! Does this make the default on_local_build?

It does indeed! Screenshot is included in the PR description.

@rsimha An updated version of filesize was published with the necessary change.

Thank you! Will update and merge this once all tests are green.