chore(templates): add scaffold files for CDK overrides/

[efekarakus]

Related #4208

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the Apache 2.0 License.

[github-actions]

🍕 Here are the new binary sizes!

Name	New size (kiB)	size (kiB)	Delta (%)
macOS (amd)	48300	47904	+0.83
macOS (arm)	48964	48576	+0.80
linux (amd)	42480	42124	+0.85
linux (arm)	41860	41472	+0.94
windows (amd)	39244	38940	+0.78

[codecov-commenter]

Codecov Report

Merging #4291 (1fa5d1a) into mainline (8aebf75) will increase coverage by 0.05%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           mainline    #4291      +/-   ##
============================================
+ Coverage     70.00%   70.05%   +0.05%     
============================================
  Files           260      259       -1     
  Lines         36486    36643     +157     
  Branches        264      264              
============================================
+ Hits          25541    25672     +131     
- Misses         9726     9745      +19     
- Partials       1219     1226       +7     

Impacted Files	Coverage Δ
internal/pkg/aws/route53/errors.go	85.71% <0.00%> (-14.29%)	⬇️
internal/pkg/cli/deploy/env.go	74.25% <0.00%> (-0.94%)	⬇️
...ternal/pkg/deploy/cloudformation/cloudformation.go	72.47% <0.00%> (-0.55%)	⬇️
internal/pkg/cli/env_deploy.go	54.27% <0.00%> (-0.05%)	⬇️
internal/pkg/cli/init.go	20.66% <0.00%> (ø)
internal/pkg/aws/route53/domain.go
internal/pkg/cli/app_init.go	67.01% <0.00%> (+2.85%)	⬆️
internal/pkg/aws/route53/route53.go	85.08% <0.00%> (+3.50%)	⬆️
internal/pkg/cli/env_package.go	46.08% <0.00%> (+4.28%)	⬆️
internal/pkg/template/artifactpath/artifactpath.go	35.29% <0.00%> (+21.96%)	⬆️

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[huanjani]

[paragbhingre]

Couple nits, otherwise looks good to me. Feel free to remove the label.

[kohidave]

Very excellent.