refactor(cli): use modern messaging infrastructure

[mrgrain]

Updates code in lib/api to use the latest version of the modern messaging infrastructure instead of legacy helpers.

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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

Attention: Patch coverage is 73.55372% with 32 lines in your changes missing coverage. Please review.

Project coverage is 85.44%. Comparing base (a15e73e) to head (759215c).

Files with missing lines	Patch %	Lines
...ckages/aws-cdk/lib/api/resource-import/importer.ts	45.45%	6 Missing ⚠️
...ages/aws-cdk/lib/api/deployments/cloudformation.ts	58.33%	5 Missing ⚠️
...s-cdk/lib/api/environment/environment-resources.ts	20.00%	4 Missing ⚠️
...dk/lib/api/garbage-collection/garbage-collector.ts	86.20%	4 Missing ⚠️
...ckages/aws-cdk/lib/api/resource-import/migrator.ts	20.00%	4 Missing ⚠️
...cdk/lib/api/stack-events/stack-activity-monitor.ts	66.66%	3 Missing ⚠️
packages/aws-cdk/lib/api/deployments/assets.ts	50.00%	2 Missing ⚠️
...ackages/aws-cdk/lib/api/deployments/deployments.ts	75.00%	2 Missing ⚠️
...ages/aws-cdk/lib/api/bootstrap/deploy-bootstrap.ts	75.00%	1 Missing ⚠️
...cdk/lib/api/garbage-collection/progress-printer.ts	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #266      +/-   ##
==========================================
+ Coverage   85.27%   85.44%   +0.16%     
==========================================
  Files         220      219       -1     
  Lines       36627    36499     -128     
  Branches     4454     4455       +1     
==========================================
- Hits        31235    31185      -50     
+ Misses       5299     5217      -82     
- Partials       93       97       +4     

Flag	Coverage Δ
suite.unit	85.44% <73.55%> (+0.16%)	⬆️

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[iliapolo]

Intentional color removal?

[mrgrain]

Intentional. Turned the red info message that says "Error" into a proper error level message, which will be colored red as well.

[iliapolo]

debug to info? intentional?

[mrgrain]

Yes, they are info from the toolkit perspective. In our CLI we handle the Stack Monitoring messages differently (via the activity printers --progress=events and --progress=bar), so we don't actually care about the levle here.