feat(clinic): implement doctor detachment functionality with API endpoint and confirmation dialog

src/Clinic/Entity/Clinic.php

@@ -147,6 +147,16 @@ class Clinic
     public function getCreatedAt(): int           { return $this->createdAt; }
     public function getUpdatedAt(): int { return $this->updatedAt; }
     public function getDoctors(): Collection    { return $this->doctors; }
+
+    public function hasDoctor(Doctor $doctor): bool { return $this->doctors->contains($doctor); }
+
+    public function removeDoctor(Doctor $doctor): self
+    {
+        $this->doctors->removeElement($doctor);
+        $this->touch();
+        return $this;
+    }
+
     public function getSpecialties(): Collection { return $this->specialties; }
     public function getServices(): Collection   { return $this->services; }
     public function getInsurances(): Collection { return $this->insurances; }