feat(@angular/build): Support splitting browser and server stats jsonfiles for easier consumption #32989

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@tsteuwer-accesso

The following contributors were found for this pull request:

✅ 79fc479 Committer: @tsteuwer-accesso <tro******wer@accesso.com>
✅ 3a52055 Author: @angular-robot <ang*******bot@google.com>
✅ 79fc479 Author: @clydin <19598772+clydin@users.noreply.github.com>
✅ 8a5dc19 Author: @alan-agius4 <17563226+alan-agius4@users.noreply.github.com>, <al*****us@google.com>
✅ 4e3cc1e Author: @dgp1130 <dgp1130@users.noreply.github.com>
✅ 80945bf Author: @crisbeto <cr****to@abv.bg>
✅ 3100d08 Author: @yjaaidi <yo***s@marmicode.io>
✅ ac3e5df Author: @IchordeDionysos <denn********mann@simpleclub.com>

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