Refactor token cache entities into types

[tnorling]

Refactors CredentialEntity, IdTokenEntity, AccessTokenEntity, and RefreshTokenEntity to be Types rather than a Class and moves static class methods into functions exported to the CacheHelpers namespace.

Making these types and separating the class methods from the type definition allows us to read from the cache and directly use the value without needing to first copy each key/value pair into an instance of the class (the toObject helper function). Doing it this way also results in a small bundle size improvement.

Reviews can be focused on the msal-common/src/cache folder. The rest of the changes are repetitively changing references to the affected functions

[codecov-commenter]

Codecov Report

Merging #6580 (cffde12) into dev (81d34b4) will decrease coverage by 4.13%.
Report is 361 commits behind head on dev.
The diff coverage is 60.00%.

Flag	Coverage Δ		*Carryforward flag
msal-angular	96.73% <ø> (+0.22%)	⬆️	Carriedforward from 93487d6
msal-browser	79.00% <ø> (-7.47%)	⬇️	Carriedforward from 93487d6
msal-common	83.97% <ø> (-0.58%)	⬇️
msal-core	?
msal-node	80.72% <ø> (-2.67%)	⬇️	Carriedforward from 93487d6
msal-node-extensions	67.37% <59.74%> (-8.27%)	⬇️	Carriedforward from 93487d6
msal-react	94.24% <ø> (-0.45%)	⬇️	Carriedforward from 93487d6
node-token-validation	?

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

Files	Coverage Δ
extensions/msal-node-extensions/src/Dpapi.ts	100.00% <100.00%> (ø)
.../msal-node-extensions/src/error/NativeAuthError.ts	100.00% <100.00%> (ø)
extensions/msal-node-extensions/src/index.ts	100.00% <100.00%> (ø)
...nsions/msal-node-extensions/src/packageMetadata.ts	100.00% <100.00%> (+100.00%)	⬆️
...-extensions/src/persistence/DataProtectionScope.ts	100.00% <100.00%> (ø)
...nsions/msal-node-extensions/src/utils/Constants.ts	100.00% <100.00%> (ø)
...sions/msal-node-extensions/src/utils/TypeGuards.ts	100.00% <100.00%> (ø)
lib/msal-angular/src/constants.ts	100.00% <ø> (ø)
lib/msal-angular/src/msal.broadcast.service.ts	100.00% <ø> (ø)
lib/msal-angular/src/msal.guard.ts	90.78% <ø> (+0.64%)	⬆️
... and 70 more

... and 180 files with indirect coverage changes

[hectormmg]

Looks good. Is there a reason why we're not doing the same for AccountEntity?

[tnorling]

Looks good. Is there a reason why we're not doing the same for AccountEntity?

I will do the other entities in separate PR(s). Was trying to keep this as small as possible, but it ended up pretty big anyway :/

[sameerag]

Some small comments.