Fix formatting and run formatting check in CI

[tnorling]

Formatting changes cause code churn and make PRs harder to review. This adds a CI check to ensure formatting is correct on each PR and applies formatting to all the files which were missed in the original move to Prettier.

Future enhancement could auto commit a formatting fix, if needed

[codecov-commenter]

Codecov Report

Merging #6264 (201f4e2) into dev (81d34b4) will decrease coverage by 2.11%.
Report is 219 commits behind head on dev.
The diff coverage is 67.42%.

Flag	Coverage Δ		*Carryforward flag
msal-angular	96.73% <92.78%> (+0.22%)	⬆️
msal-browser	85.60% <ø> (-0.87%)	⬇️	Carriedforward from 686e6f0
msal-common	82.47% <ø> (-2.07%)	⬇️
msal-core	?
msal-node	79.29% <ø> (-4.10%)	⬇️
msal-node-extensions	68.51% <60.77%> (-7.13%)	⬇️
msal-react	94.24% <ø> (-0.45%)	⬇️
node-token-validation	?

*This pull request uses carry forward flags. Click here to find out more.

Files Changed	Coverage Δ
...ions/msal-node-extensions/src/utils/Environment.ts	20.51% <0.00%> (-22.08%)	⬇️
lib/msal-angular/src/msal.interceptor.ts	100.00% <ø> (ø)
lib/msal-angular/src/msal.module.ts	100.00% <ø> (ø)
lib/msal-angular/src/msal.navigation.client.ts	93.33% <ø> (+0.47%)	⬆️
lib/msal-angular/src/msal.redirect.component.ts	100.00% <ø> (ø)
lib/msal-angular/src/msal.service.ts	100.00% <ø> (ø)
lib/msal-angular/src/packageMetadata.ts	100.00% <ø> (ø)
...b/msal-browser/src/app/IPublicClientApplication.ts	43.75% <ø> (ø)
...ib/msal-browser/src/app/PublicClientApplication.ts	66.66% <ø> (-28.67%)	⬇️
...er/src/broker/nativeBroker/NativeMessageHandler.ts	85.83% <ø> (-0.12%)	⬇️
... and 69 more

... and 164 files with indirect coverage changes

[peterzenz]

Appreciate you not mixing functional changes with the broad formatting ones.