[Signin][Histograms] Refactor Signin.InterceptResult histograms structure

"Signin.InterceptResult" histogram family had the histogram suffixes
format, which grew large and could create confusion on how to add
new values.

Modernize the approach by using patterned histograms instead.

Pro:
- Better/clearer split and easier to enrich when needed.

Con:
- Patterened approach do not have a way to filter out combinations
when using a two layered pattern.
- Some duplicated histograms content, even though there is some
difference in the end result of the histograms.

Having a separate histogram structure for
"Signin.InterceptResult.ChromeSignin{State}" is useful as there is a
possibility that we will enrich this part more with the Uno project.

Change-Id: I72970add09f6534128a0096a3748fe1192608c37
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5685193
Commit-Queue: Ryan Sultanem <rsult@google.com>
Reviewed-by: Alex Ilin <alexilin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1324973}