feat: Add Twitch Drops Tracker application with campaign management

- Implemented models for DropCampaign, Game, Organization, DropBenefit, TimeBasedDrop, and DropBenefitEdge.
- Created views for listing and detailing drop campaigns.
- Added templates for dashboard, campaign list, and campaign detail.
- Developed management command to import drop campaigns from JSON files.
- Configured admin interface for managing campaigns and related models.
- Updated URL routing for the application.
- Enhanced README with installation instructions and project structure.

twitch/admin.py

@@ -1 +1,81 @@
-# Register your models here.
+from __future__ import annotations
+
+from django.contrib import admin
+
+from twitch.models import DropBenefit, DropBenefitEdge, DropCampaign, Game, Organization, TimeBasedDrop
+
+
+@admin.register(Game)
+class GameAdmin(admin.ModelAdmin):
+    """Admin configuration for Game model."""
+
+    list_display = ("id", "display_name", "slug")
+    search_fields = ("id", "display_name", "slug")
+
+
+@admin.register(Organization)
+class OrganizationAdmin(admin.ModelAdmin):
+    """Admin configuration for Organization model."""
+
+    list_display = ("id", "name")
+    search_fields = ("id", "name")
+
+
+class TimeBasedDropInline(admin.TabularInline):
+    """Inline admin for TimeBasedDrop model."""
+
+    model = TimeBasedDrop
+    extra = 0
+
+
+@admin.register(DropCampaign)
+class DropCampaignAdmin(admin.ModelAdmin):
+    """Admin configuration for DropCampaign model."""
+
+    list_display = ("id", "name", "game", "owner", "status", "start_at", "end_at", "is_active")
+    list_filter = ("status", "game", "owner")
+    search_fields = ("id", "name", "description")
+    inlines = [TimeBasedDropInline]
+    readonly_fields = ("created_at", "updated_at")
+
+
+class DropBenefitEdgeInline(admin.TabularInline):
+    """Inline admin for DropBenefitEdge model."""
+
+    model = DropBenefitEdge
+    extra = 0
+
+
+@admin.register(TimeBasedDrop)
+class TimeBasedDropAdmin(admin.ModelAdmin):
+    """Admin configuration for TimeBasedDrop model."""
+
+    list_display = (
+        "id",
+        "name",
+        "campaign",
+        "required_minutes_watched",
+        "required_subs",
+        "start_at",
+        "end_at",
+    )
+    list_filter = ("campaign__game", "campaign")
+    search_fields = ("id", "name")
+    inlines = [DropBenefitEdgeInline]
+
+
+@admin.register(DropBenefit)
+class DropBenefitAdmin(admin.ModelAdmin):
+    """Admin configuration for DropBenefit model."""
+
+    list_display = (
+        "id",
+        "name",
+        "game",
+        "owner_organization",
+        "distribution_type",
+        "entitlement_limit",
+        "created_at",
+    )
+    list_filter = ("game", "owner_organization", "distribution_type")
+    search_fields = ("id", "name")