Add limit property to PagedDocumentLinks and use it in requests

[DechengMa]

This PR is for closing #109.

Changes

• Add

  var nextLimit: String? {
  return next?.value(for: "limit")
  }

  to PagedDocumentLinks

• Use it in request parameters

  if let limit = limit {
  parameters.add(limit)
  } else if let nextLimit = next?.nextLimit {
  parameters["limit"] = nextLimit
  }

This is just a workaround, please comment if you have other ideas, thanks.

[SwiftLeeBot]

	Messages
:book:	View more details on Bitrise
:book:	AppStoreConnect-Swift-SDK: Executed 157 tests, with 0 failures (0 unexpected) in 0.621 (1.336) seconds

AppStoreConnect_Swift_SDK.framework: Coverage: 81.55

File	Coverage
ListDownloadCertificates.swift	0.0%	⚠️
ListBetaGroupsToWhichBetaTesterBelongs.swift	95.45%	✅
ListBetaTestersInBetaGroup.swift	95.45%	✅
ListBetaTesters.swift	98.48%	✅
ListBetaBuildLocalizationsOfBuild.swift	95.45%	✅
ListIndividualTestersForBuild.swift	94.74%	✅
ListBuildsAssignedToBetaTester.swift	95.45%	✅
ListBuilds.swift	98.88%	✅
ListInvitedUsers.swift	97.83%	✅
ListBetaLicenseAgreements.swift	96.88%	✅
ListBetaAppReviewSubmissions.swift	97.06%	✅
ListBundleIds.swift	38.46%	✅
ListDownloadProfiles.swift	0.0%	⚠️
ListAppEncryptionDeclarations.swift	97.44%	✅
ListBetaAppLocalizationsOfApp.swift	95.45%	✅
PagedDocumentLinks.swift	81.25%	✅
ListBetaAppReviewDetails.swift	96.88%	✅
ListBuildsOfPrereleaseVersion.swift	94.74%	✅
ListPrereleaseVersions.swift	98.21%	✅
ListAppsForBetaTester.swift	95.45%	✅
ListBetaGroups.swift	98.44%	✅
ListAppsVisibleToUser.swift	94.74%	✅
ListBuildsOfApp.swift	95.65%	✅
ListAppsVisibleToInvitedUser.swift	94.74%	✅
ListBetaGroupsForApp.swift	95.45%	✅
ListBetaBuildLocalizations.swift	97.3%	✅
ListBuildsForBetaGroup.swift	95.45%	✅
ListPrereleaseVersionsForApp.swift	95.45%	✅
ListBuildBetaDetails.swift	97.06%	✅
ListDevices.swift	0.0%	⚠️
ListBetaAppLocalizations.swift	97.3%	✅
ListUsers.swift	97.83%	✅

Generated by :no_entry_sign: Danger Swift against e17ff8a537a1bd77c8b8c6a21c68a02fd25d6679

[SwiftLeeBot]

Congratulations! :tada: This was released as part of Release 1.1.3 :rocket:

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