chore(cli): add S3 bucket object tree to svc show

[huanjani]

sample output:

% copilot svc show 
Service name: static-site
About

  Application  bugbash-static
  Name         static-site
  Type         Static Site

Routes

  Environment  URL
  -----------  ---
  test         d1vwytbnh1k1gy.cloudfront.net
  prod         d1yb44q5409rdj.cloudfront.net

S3 Bucket Objects

  Environment  test
.
├── error.html
├── index.html
├── css
│   ├── Style.css
│   ├── all.min.css
│   └── bootstrap.min.css
└── images
    ├── bg-masthead.jpg
    └── new
        └── hi.html

  Environment  prod
.
├── ReadMe.md
├── error.html
├── index.html
├── Images
│   ├── AWS-free.PNG
│   ├── S3WebsiteHosting-Architecture.PNG
│   ├── SampleWebsite.PNG
│   ├── Step1-CreateBucket-B.PNG
│   ├── Step1-CreateBucket-C.PNG
│   ├── Step1-CreateBucket-D.PNG
│   ├── Step1-CreateBucket-E.PNG
│   ├── Step1-CreateBucket.PNG
│   ├── Step2-UploadContents.PNG
│   ├── Step3-BucketPolicy-A.PNG
│   ├── Step3-BucketPolicy-B.PNG
│   ├── Step3-BucketPolicy.PNG
│   ├── Step4-A.PNG
│   └── Step4-B.PNG
├── css
│   ├── Style.css
│   ├── all.min.css
│   └── bootstrap.min.css
└── images
    ├── bg-masthead.jpg
    └── new
        └── hi.html

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)	50828	50748	+0.16
macOS (arm)	51032	50952	+0.16
linux (amd)	44744	44676	+0.15
linux (arm)	43076	43012	+0.15
windows (amd)	41608	41548	+0.14

[codecov-commenter]

Codecov Report

Merging #4966 (07676b3) into mainline (d79a46d) will increase coverage by 0.00%.
The diff coverage is 74.31%.

@@            Coverage Diff             @@
##           mainline    #4966    +/-   ##
==========================================
  Coverage     70.15%   70.15%            
==========================================
  Files           289      289            
  Lines         41693    41797   +104     
  Branches        285      285            
==========================================
+ Hits          29248    29324    +76     
- Misses        11038    11060    +22     
- Partials       1407     1413     +6     

Impacted Files	Coverage Δ
internal/pkg/describe/service.go	87.01% <ø> (ø)
internal/pkg/describe/static_site.go	60.78% <50.00%> (-3.57%)	⬇️
internal/pkg/aws/s3/s3.go	91.32% <87.32%> (-2.14%)	⬇️

[iamhopaul123]

LGTM overall especially the example included in the description!

[iamhopaul123]

LGTM overall especially the example included in the description!

[iamhopaul123]

Awesome!

[Lou1415926]

Looks great!! I just have two more questions 🥺 mostly the env manager role session and whether we should let the users know that there is no file in an env instead of not showing the env at all!

[Lou1415926]

looks like we can look to parallelize these calls in the future!

[Lou1415926]

Looks great! Approving with a label but feel free to remove it whenever you're raedy!