feat(users): add google oauth login flow

apps/users/models.py

@@ -69,3 +69,34 @@ class LoginAttempt(BaseModel):
 
     def __str__(self):
         return f"LoginAttempt for User: {self.user} ({'✅' if self.status else '❌'})"
+
+
+class UserSocialAccount(BaseModel):
+    class ProviderType(models.TextChoices):
+        GOOGLE = "google", "google"
+
+    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name="social_accounts")
+    provider = models.CharField(max_length=32, choices=ProviderType.choices)
+    provider_user_id = models.CharField(max_length=255)
+    email = models.EmailField(blank=True, default="")
+    email_verified = models.BooleanField(default=False)
+    avatar_url = models.URLField(blank=True, default="")
+
+    class Meta:
+        verbose_name = "user_social_account"
+        verbose_name_plural = "user_social_accounts"
+        db_table = "user_social_account"
+        ordering = ("-updated_at", "-created_at")
+        constraints = (
+            models.UniqueConstraint(
+                fields=("provider", "provider_user_id"),
+                name="user_social_account_provider_uid_uniq",
+            ),
+        )
+        indexes = (
+            models.Index(fields=["provider", "provider_user_id"], name="user_social_provider_uid_idx"),
+            models.Index(fields=["provider", "email"], name="user_social_provider_email_idx"),
+        )
+
+    def __str__(self):
+        return f"{self.provider}:{self.provider_user_id}"