chore: enable ctrl-c only after changeset is created and executed

[KollaAdithya]

Even though this PR looks big, half of the changes are just unit tests.

Better solution than #5097

Old Approach:
I closed PR 5097. In the previous PR #5097, there is a drawback with the logic when users initiated a ctrl-c interruption during the process of proposing infrastructure changes. The issue was that the interruption signal (SIGINT) was being captured even before the changeset is created and executed. As a result, when the user pressed ctrl-c during proposing infrastructure changes, we display a message like Received interrupt for ctrl-c; However, despite the interruption, the code continued to create and execute the changeset, leading to the stack creation process continuing even after the user intended to stop it.

New Approach:
To address the issue, this PR had a better solution for handling ctrl-c interruptions during the process of proposing infrastructure changes. Listening to the SIGINT signal is performed only after the changeset is created and executed. The necessary changes to achieve this have been made by relocating the complete logic for waiting and handling the signal to the deploy/cloudformation package.

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)	51476	51400	+0.15
macOS (arm)	51684	51604	+0.16
linux (amd)	45308	45244	+0.14
linux (arm)	43588	43524	+0.15
windows (amd)	42128	42072	+0.13

[codecov-commenter]

Codecov Report

Merging #5112 (afaef34) into mainline (55dba4d) will decrease coverage by 0.08%.
Report is 13 commits behind head on mainline.
The diff coverage is 70.50%.

@@             Coverage Diff              @@
##           mainline    #5112      +/-   ##
============================================
- Coverage     69.73%   69.66%   -0.08%     
============================================
  Files           293      295       +2     
  Lines         43003    43243     +240     
  Branches        285      285              
============================================
+ Hits          29988    30124     +136     
- Misses        11552    11643      +91     
- Partials       1463     1476      +13     

Files Changed	Coverage Δ
internal/pkg/cli/job_deploy.go	39.80% <22.22%> (-0.54%)	⬇️
internal/pkg/cli/svc_deploy.go	38.59% <25.00%> (-0.45%)	⬇️
...ternal/pkg/deploy/cloudformation/cloudformation.go	75.96% <78.63%> (+1.65%)	⬆️
internal/pkg/deploy/cloudformation/workload.go	60.97% <100.00%> (ø)

... and 8 files with indirect coverage changes

[iamhopaul123]

Awesome! Just to double check: do we need to update the deploy and jobdeploy with the same thing?

[KollaAdithya]

With this PR we are already enabling ctrl-c for both svc deploy and job deploy under the hood ctrl-c will automatically apply to copilot deploy

[dannyrandall]

i love this PR!🚀 just some small nits and one more question 😊

meant to comment

[dannyrandall]

great work!