fix: rework usage data prompt on init

[aws-eddy]

Description of changes

This PR moves the usage data prompt on post init to inform developers that we are collecting data to improve the CLI. It also gives them instructions for on how to opt out of this data collection mechanism. This configuration will be stored on a global variable and will only be seen by developers once.

Issue #, if available

Description of how you validated changes

Checklist

• [x] PR description included
• [x] yarn test passes
• [x] Tests are changed or added
• [ ] Relevant documentation is changed or added (and PR referenced)
• [ ] New AWS SDK calls or CloudFormation actions have been added to relevant test and service IAM policies
• [ ] Pull request labels are added

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

:x: Patch coverage is 31.25000% with 22 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 48.43%. Comparing base (ec9a2ba) to head (d9c6771). :warning: Report is 715 commits behind head on dev.

Files with missing lines	Patch %	Lines
packages/amplify-cli/src/commands/diagnose.ts	23.07%	7 Missing and 3 partials :warning:
...ackages/amplify-cli/src/init-steps/s9-onSuccess.ts	27.27%	8 Missing :warning:
...amplify-cli-core/src/state-manager/stateManager.ts	33.33%	4 Missing :warning:

Additional details and impacted files

@@             Coverage Diff             @@
##              dev   #12705       +/-   ##
===========================================
+ Coverage    0.00%   48.43%   +48.43%     
===========================================
  Files        1296      841      -455     
  Lines      149743    38082   -111661     
  Branches     1296     7751     +6455     
===========================================
+ Hits            0    18445    +18445     
+ Misses     148447    18049   -130398     
- Partials     1296     1588      +292     

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