Update RateLimit parsing for Multiple values

[instanceof]

• Multiple X-Rate-Limit headers can be combined with commas when using HttpURLResponse.value(forHTTPHeaderField:)
• The comma and extra spaces show up in the RateLimit.entries keys.

x-rate-limit: user-hour-lim:3600;user-hour-rem:3598;
x-rate-limit: user-minute-lim:150;user-minute-rem:149;

becomes:

user-hour-lim:3600;user-hour-rem:3598;, user-minute-lim:150;user-minute-rem:149;
                                      ^^

print("Rate Limit: \(rateLimit.entries)")

Which was parsed as:

Rate Limit: ["user-hour-rem": 3598, ", user-minute-lim": 150, "user-hour-lim": 3600, "user-minute-rem": 149]
or
Rate Limit: [", user-minute-lim": 150, "user-hour-lim": 3600, "user-hour-rem": 3598, "user-minute-rem": 149]

• Adds a test for the observed comma space separated headers observed.

See #227

[SwiftLeeBot]

	Warnings
⚠️	'AppPrice' is deprecated: Deprecated
⚠️	'AppPrice' is deprecated: Deprecated
⚠️	'Prices' is deprecated: Deprecated
⚠️	'AvailableTerritories' is deprecated: Deprecated
⚠️	'InAppPurchases' is deprecated: Deprecated
⚠️	'Prices' is deprecated: Deprecated
⚠️	'AvailableTerritories' is deprecated: Deprecated
⚠️	'InAppPurchases' is deprecated: Deprecated
⚠️	'Builds' is deprecated: Deprecated
⚠️	'Builds' is deprecated: Deprecated
⚠️	'AgeRatingDeclaration' is deprecated: Deprecated
⚠️	'AgeRatingDeclaration' is deprecated: Deprecated
⚠️	'AppStoreVersionExperiment' is deprecated: Deprecated
⚠️	'AppStoreVersionExperiment' is deprecated: Deprecated
⚠️	'AppStoreVersionSubmission' is deprecated: Deprecated
⚠️	'AppStoreVersionExperiment' is deprecated: Deprecated
⚠️	'AppStoreVersionSubmission' is deprecated: Deprecated
⚠️	'AppStoreVersionExperiment' is deprecated: Deprecated
⚠️	'Prices' is deprecated: Deprecated
⚠️	'AvailableTerritories' is deprecated: Deprecated
⚠️	'Prices' is deprecated: Deprecated
⚠️	'AvailableTerritories' is deprecated: Deprecated
⚠️	'AppPrice' is deprecated: Deprecated
⚠️	'AppStoreVersionExperiment' is deprecated: Deprecated
⚠️	'AppStoreVersionExperiment' is deprecated: Deprecated
⚠️	'Builds' is deprecated: Deprecated
⚠️	'AgeRatingDeclaration' is deprecated: Deprecated
⚠️	'AppStoreVersionExperiment' is deprecated: Deprecated
⚠️	'AppStoreVersionExperiment' is deprecated: Deprecated
⚠️	'AppPrice' is deprecated: Deprecated
⚠️	Left side of nil coalescing operator '??' has non-optional type 'String', so the right side is never used
⚠️	'Prices' is deprecated: Deprecated
⚠️	'AvailableTerritories' is deprecated: Deprecated
⚠️	'InAppPurchases' is deprecated: Deprecated
⚠️	'AppStoreVersionSubmission' is deprecated: Deprecated
⚠️	'AppStoreVersionExperiment' is deprecated: Deprecated
⚠️	'AppStoreVersionSubmission' is deprecated: Deprecated
⚠️	'AppStoreVersionExperiment' is deprecated: Deprecated
⚠️	'Prices' is deprecated: Deprecated
⚠️	'AvailableTerritories' is deprecated: Deprecated
⚠️	'AppStoreVersionExperiment' is deprecated: Deprecated
⚠️	'AppStoreVersionExperiment' is deprecated: Deprecated

	Messages
📖	AppStoreConnect-Swift-SDK-Tests: Executed 17 tests (0 failed, 0 retried, 0 skipped) in 0.107 seconds
📖	View more details on Bitrise

Code Coverage Report

Name	Coverage

Generated by 🚫 Danger Swift against 8c730a6

[AvdLee]

Interesting, thanks for your contribution!

[instanceof]

Looks like the comma is added in Foundation here:

https://github.com/apple/swift-corelibs-foundation/blob/7fc59bfa50e8679675d19728245d3e9784c34d5f/Sources/FoundationNetworking/URLSession/HTTP/HTTPMessage.swift#L78

[instanceof]

Any other changes requested to merge this PR?

[AvdLee]

Any other changes requested to merge this PR?

Nope, all good! Thanks again!