Bugfix/update package

[jorgesarabia]

Update some imports in webview-umbrella.h to solve the issues #3 and #4

Pre-launch Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I read the Tree Hygiene wiki page, which explains my responsibilities.
• I read and followed the relevant style guides and ran the auto-formatter. (Unlike the flutter/flutter repo, the flutter/plugins repo does use dart format.)
• I signed the CLA.
• The title of the PR starts with the name of the plugin surrounded by square brackets, e.g. [shared_preferences]
• I listed at least one issue that this PR fixes in the description above.
• I updated pubspec.yaml with an appropriate new version according to the pub versioning philosophy, or this PR is exempt from version changes.
• I updated CHANGELOG.md to add a description of the change, following repository CHANGELOG style.
• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or this PR is test-exempt.
• All existing and new tests are passing.

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[ghost]

Hello,

When this PR will be applied please :'( ?

[ghost]

up

[rafayrao97]

hi facing same issue , please let me know what to do ?

[rafayrao97]

up

Facing the same issue ,let me know should I only. change the version or there are other things to change?

[ghost]

up

[ivanthecrazy]

@wenzhiming Please approve

[waleedsyal123]

Definition of 'FLTCookieManager' must be imported from module 'webview_flutter_wkwebview.FLTCookieManager' before it is required
I am getting error on ios device, Can you provide some info when it will be fixed
Thanks

[waleedsyal123]

Some help regarding this issue in ios: Please anyone

Modules Issue (Xcode): Definition of 'FLTCookieManager' must be imported from module 'webview_flutter_wkwebview.FLTCookieManager' before it is required
/Users/apple/flutter/.pub-cache/hosted/pub.dartlang.org/webview_pro_wkwebview-2.7.1+2/ios/Classes/FLTCookieManager.m:7:16