chore: fix linting errors in /static/js/libs and formatting errors

[chillkang]

Done

• opened a branch from chore: add file extensions to lint-js script and fix the existing linting errors #4777
• fix the existing formatting errors
• fix the linting errors in snapcraft.io/static/js/libs

How to QA

• lint-js should be failing as there are other linting errors left to be fixed
• starting from this line, check those files below:
  static/js/libs/__tests__/iframeSize.test.ts
static/js/libs/debounce.ts
static/js/libs/__tests__/throttle.test.ts
static/js/libs/__tests__/debounce.test.ts

Testing

• This PR has tests
• No testing required (explain why): fixing linting errors

Issue / Card

Fixes #https://warthogs.atlassian.net/browse/WD-13579

[webteam-app]

Demo

Jenkins

demos.haus

[steverydz]

LGTM 👍

[codecov]

Codecov Report

Attention: Patch coverage is 67.53247% with 25 lines in your changes missing coverage. Please review.

Project coverage is 62.89%. Comparing base (b8b6b55) to head (7d51520).
Report is 139 commits behind head on main.

Files	Patch %	Lines
static/js/publisher/form.ts	46.15%	7 Missing ⚠️
static/js/publisher/tour/helpers.ts	0.00%	4 Missing ⚠️
static/js/publisher/release/helpers.ts	25.00%	3 Missing ⚠️
static/js/brand-store/selectors/index.ts	80.00%	2 Missing ⚠️
static/js/public/first-snap-flow.ts	0.00%	2 Missing ⚠️
...listing/components/MetricsInputs/MetricsInputs.tsx	0.00%	2 Missing ⚠️
static/js/base/ga.ts	0.00%	1 Missing ⚠️
.../js/brand-store/components/Model/PoliciesTable.tsx	0.00%	1 Missing ⚠️
...listing/components/LicenseInputs/LicenseSearch.tsx	50.00%	1 Missing ⚠️
static/js/publisher/listing/utils/getFormData.ts	0.00%	1 Missing ⚠️
... and 1 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4790      +/-   ##
==========================================
- Coverage   66.80%   62.89%   -3.92%     
==========================================
  Files         113      160      +47     
  Lines        3714     4166     +452     
  Branches      965      640     -325     
==========================================
+ Hits         2481     2620     +139     
- Misses       1098     1359     +261     
- Partials      135      187      +52     

Files	Coverage Δ
...store/components/AccountDetails/AccountDetails.tsx	25.49% <ø> (ø)
...d-store/components/AppPagination/AppPagination.tsx	69.23% <ø> (-2.20%)	⬇️
static/js/brand-store/components/Model/Model.tsx	42.55% <ø> (-6.60%)	⬇️
...s/brand-store/components/Model/ModelBreadcrumb.tsx	100.00% <ø> (ø)
...tatic/js/brand-store/components/Model/Policies.tsx	53.84% <ø> (-5.09%)	⬇️
...s/brand-store/components/Navigation/Navigation.tsx	52.00% <ø> (+12.93%)	⬆️
...ic/js/brand-store/components/Settings/Settings.tsx	57.53% <100.00%> (-3.30%)	⬇️
static/js/brand-store/hooks/index.ts	38.77% <ø> (+0.13%)	⬆️
static/js/brand-store/slices/membersSlice.ts	34.61% <ø> (ø)
static/js/brand-store/slices/snapsSlice.ts	11.53% <ø> (ø)
... and 47 more

... and 70 files with indirect coverage changes