DOCSP-42956: Remove $collection support

[norareidy]

JIRA - https://jira.mongodb.org/browse/DOCSP-42956
Staging - https://deploy-preview-136--docs-laravel.netlify.app/upgrade/#version-5.x-breaking-changes

Checklist

• Add tests and ensure they pass
• Add an entry to the CHANGELOG.md file

[rustagir]

lgtm with a wording change suggestion

[GromNaN]

Actually there is only 2 methods removed in MongoDB\Laravel\Connection and MongoDB\Laravel\Schema\Builder, where they can be used as instance method.

But they are exposed in the Laravel facades Illuminate\Support\Facades\DB and Illuminate\Support\Facades, which expose them as static method. (Yes, this is very confusing).

Suggested change

	- ``Model::collection()``: use ``Model::table()``
	- ``DB::collection()``: use ``DB::table()``
	- ``Connection::collection()``: use ``Connection::table()``
	- ``Schema::collection()``: use ``Schema::table()``
	- ``DB::collection()``: use ``DB::table()``
	- ``Schema::collection()``: use ``Schema::table()``

[norareidy]

Okay I see, updated! Should I mention the static methods here?

[GromNaN]

I think it would be better with a diff of the changes to be made.

use MongoDB\Laravel\Eloquent\Model;

class User extends Model
{
    protected $keyType = 'string';
-   protected $collection = 'app_user';
+   protected $table = 'app_user';

    ...
}

use Illuminate\Support\Facades\DB;

- DB::collection('app_user')->find($id);
+ DB::table('app_user')->find($id);

use Illuminate\Support\Facades\Schema;
use MongoDB\Laravel\Schema\Blueprint;

- Schema::collection('app_user', function (Blueprint $collection) { ... });
+ Schema::table('app_user', function (Blueprint $table) { ... });