feat: Initialize supabase with custom websocket client

[Vinzent03]

What kind of change does this PR introduce?

feature

What is the current behavior?

Uses the implementation from dart:io for http.Client and WebSocketChannel.

What is the new behavior?

Use the classes provided by cupertino_http.

Additional context

I do not own a mac, so I cannot test this. So we can hopefully find a person to verify this actually works on iOS and macOS.

close #147

[coveralls]

Pull Request Test Coverage Report for Build 15667650391

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 2 of 8 (25.0%) changed or added relevant lines in 2 files are covered.
• 142 unchanged lines in 6 files lost coverage.
• Overall coverage increased (+5.2%) to 80.576%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
packages/supabase/lib/src/supabase_client_options.dart	1	7	14.29%

Files with Coverage Reduction	New Missed Lines	%
packages/functions_client/lib/src/functions_client.dart	1	96.49%
packages/gotrue/lib/src/fetch.dart	1	91.36%
packages/gotrue/lib/src/gotrue_mfa_api.dart	2	97.53%
packages/gotrue/lib/src/gotrue_admin_api.dart	5	92.96%
packages/gotrue/lib/src/types/mfa.dart	18	80.43%
packages/gotrue/lib/src/gotrue_client.dart	115	64.77%

Totals
Change from base Build 14868379526:	5.2%
Covered Lines:	3103
Relevant Lines:	3851

---

💛 - Coveralls

[grdsdev]

@Vinzent03 we should make sure we run CI also on macOS, and test the package at least in a iOS build, just saw that we don't to that.

I created an issue for tracking that, #1146 feel free to pick it if you want, otherwise I can work on it later.

[Vinzent03]

I'm pretty sure to verify the behavior of the cupertino http client we can't just run the existing ci on a macos build in ci. For iOS we need flutter integration tests to actually run them on a iOS simulator. For macOS I'm unsure if the cupertino http client works if we run widget tests or actually need integratino tests as well. So we would need to write many additional tests sa well.

[grdsdev]

I see there is an examples folder in https://github.com/supabase/supabase-flutter/tree/main/packages/supabase_flutter/example

Probably just getting all these examples built in CI, would already solve the issue with checking if the library works on all available platforms.

[grdsdev]

Hey @Vinzent03 I just merged a few changes to CI, including builds on the macOS runner, can you rebase this PR?

[Vinzent03]

I think I could get this pr working, but (with the weird error on macos now as well) I'm unsure we really want this pr to land. I think one huge benefit of the supabase packages is the lack of native dependencies, unlike firebase. So the building is a lot let stressful. We already see some supabase unrelated issues because of app_links and its native part.

Since one can already replace the http client, I think it's a better and more composable implementation to allow a custom websocket client in supabase and supabase_flutter to be passed to realtime_client. And publish a guide on how to provide the native http clients. This also means less depencency managment for us. This way the first experience is easier with no native dependency stress, but if a user wants the native clients they can easily add them.
What do you think @dshukertjr @DanMossa

[DanMossa]

Big fan of just writing a quick example for others to use.

[dshukertjr]

+1 on Dan here.

[Vinzent03]

@dshukertjr Do we want the documentation on how to integrate the cupertino/cronet http/websocket clients in the readme or on the docs website with a link to that in the readme?

The required changes I would note are:

• Additional packages in the readme
• Conditional import
• The platform_http_io.dart file
• The platform_http_web.dart file
• The proper initialization of supabase with the methods from these files