[cloud_firestore, cloud_firestore_web] Update Firestore web documenta…

…tion. (firebase#1982)

* [flutterfire] Mark cloud_firestore and cloud_functions as available for Web in the main feature matrix.
* [cloud_firestore] Add Web integration instructions to README.
* [cloud_firestore_web] Add post-endorsement web integration instructions.

[cloud_firestore] Endorse cloud_firestore_web. (firebase#1977)

* [cloud_firestore] Endorse cloud_firestore_web.

This change makes `cloud_firestore_web` the official implementation of `cloud_firestore` for the Web target.

It also adds web support to the `example` app.

Co-authored-by: Amr Yousef <[email protected]>

[cloud_firestore, cloud_firestore_web] Update Firestore web documenta…

…tion. (firebase#1982)

* [flutterfire] Mark cloud_firestore and cloud_functions as available for Web in the main feature matrix.
* [cloud_firestore] Add Web integration instructions to README.
* [cloud_firestore_web] Add post-endorsement web integration instructions.

[cloud_firestore_web] Fix fileName prop in pubspec.yaml (firebase#1974)

Fixes firebase#1973

[cloud_firestore] Created firestore web plugin (firebase#1950)

Add an implementation of `cloud_firestore_platform_interface` for the web platform.

Co-authored-by: David Iglesias <[email protected]>
Co-authored-by: Collin Jackson <[email protected]>

[cloud_firestore] Fix crashes when using DocumentReference with Query (…

…firebase#1955)

* Encode values using in Query#where

[cloud_firestore] Migrate to platform interface (firebase#1945)

Migrate the cloud_firestore core plugin to use the platform_interface package. All the "method channel" implementation now lives in the platform_interface package.

The plugin is now ready to support federated implementations.

Co-authored-by: David Iglesias <[email protected]>
Co-authored-by: Collin Jackson <[email protected]>

[cloud_firestore_platform_interface] Created firestore platform inter…

…face (firebase#1686)

* Created firestore platform interface package.

Part 1/3 of flutter/flutter#45293 

Co-authored-by: David Iglesias <[email protected]>
Co-authored-by: Collin Jackson <[email protected]>

[cloud_functions] Update example, README, depend on web plugin (fireb…

…ase#1909)

* Update example, add web plugin to cloud_functions dependencies

* Add web plugin section to pubspec

* Bump version for cloud_functions_web to pull in README changes

* Appease version checker

[cloud_functions] Update example, README, depend on web plugin (fireb…

…ase#1909)

* Update example, add web plugin to cloud_functions dependencies

* Add web plugin section to pubspec

* Bump version for cloud_functions_web to pull in README changes

* Appease version checker