Performance improvements #602 (#607)

* Update gitignore

* Save theme to the session to avoid a lookup #602

* Formatting

* Move routes into main service provider

* Move Observers into their own service provider

app/Providers/ObserverServiceProviders.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Providers;
+
+use App\Models\Aircraft;
+use App\Models\Airport;
+use App\Models\Flight;
+use App\Models\FlightField;
+use App\Models\FlightFieldValue;
+use App\Models\Journal;
+use App\Models\JournalTransaction;
+use App\Models\Observers\AircraftObserver;
+use App\Models\Observers\AirportObserver;
+use App\Models\Observers\FlightObserver;
+use App\Models\Observers\JournalObserver;
+use App\Models\Observers\JournalTransactionObserver;
+use App\Models\Observers\SettingObserver;
+use App\Models\Observers\Sluggable;
+use App\Models\Observers\SubfleetObserver;
+use App\Models\Observers\UserObserver;
+use App\Models\PirepField;
+use App\Models\PirepFieldValue;
+use App\Models\Setting;
+use App\Models\Subfleet;
+use App\Models\User;
+use Illuminate\Support\ServiceProvider;
+
+class ObserverServiceProviders extends ServiceProvider
+{
+    public function boot(): void
+    {
+        Aircraft::observe(AircraftObserver::class);
+        Airport::observe(AirportObserver::class);
+        Journal::observe(JournalObserver::class);
+        JournalTransaction::observe(JournalTransactionObserver::class);
+
+        Flight::observe(FlightObserver::class);
+        FlightField::observe(Sluggable::class);
+        FlightFieldValue::observe(Sluggable::class);
+
+        PirepField::observe(Sluggable::class);
+        PirepFieldValue::observe(Sluggable::class);
+
+        Setting::observe(SettingObserver::class);
+        Subfleet::observe(SubfleetObserver::class);
+        User::observe(UserObserver::class);
+    }
+}