feat(model): add storage size to dataset profiles

[shirshanka]

Checklist

• The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• Links to related issues (if applicable)
• Tests for the changes have been added/updated (if applicable)
• Docs related to the changes have been added/updated (if applicable). If a new feature has been added a Usage Guide has been added for the same.
• For any breaking change/potential downtime/deprecation/big changes an entry has been made in Updating DataHub

[github-actions]

Unit Test Results (metadata ingestion)

    7 files  ±0      7 suites  ±0   52m 56s ⏱️ -44s
661 tests ±0  657 ✔️ ±0  3 💤 ±0  1 ❌ ±0 
707 runs  ±0  700 ✔️ ±0  6 💤 ±0  1 ❌ ±0 

For more details on these failures, see this check.

Results for commit ef55fab. ± Comparison against base commit 134ca67.

[github-actions]

Unit Test Results (build & test)

509 tests  ±0   509 ✔️ ±0   8m 18s ⏱️ -10s
119 suites ±0       0 💤 ±0 
119 files   ±0       0 ❌ ±0 

Results for commit ef55fab. ± Comparison against base commit 134ca67.