[WIP] refactor: use handlers for oras blob push command

[wangxiaoxuan273]

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Part of #1542

Please check the following list:

• Does the affected code have corresponding tests, e.g. unit test, E2E test?
• Does this change require a documentation update?
• Does this introduce breaking changes that would require an announcement or bumping the major version?
• Do all new files have an appropriate license header?

[codecov]

Codecov Report

Attention: Patch coverage is 51.78571% with 27 lines in your changes missing coverage. Please review.

Project coverage is 84.07%. Comparing base (da1daf0) to head (a6fca24).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
cmd/oras/internal/display/status/tty.go	0.00%	19 Missing ⚠️
cmd/oras/internal/display/status/text.go	73.33%	4 Missing ⚠️
cmd/oras/root/blob/push.go	63.63%	2 Missing and 2 partials ⚠️

❌ Your patch check has failed because the patch coverage (51.78%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1618      +/-   ##
==========================================
- Coverage   84.41%   84.07%   -0.34%     
==========================================
  Files         120      121       +1     
  Lines        5460     5507      +47     
==========================================
+ Hits         4609     4630      +21     
- Misses        604      629      +25     
- Partials      247      248       +1     

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