Add Grover's algorithm with conditional imports, ignore in CI

Author: AnshMNSoni

quantum/grover_search_algorithm.py

@@ -13,14 +13,12 @@
 """
 
 import math
+import importlib.util
 
-try:
-    import qiskit
-    from qiskit import Aer, ClassicalRegister, QuantumCircuit, QuantumRegister, execute
+QISKIT_AVAILABLE = importlib.util.find_spec("qiskit") is not None
 
-    QISKIT_AVAILABLE = True
-except ModuleNotFoundError:
-    QISKIT_AVAILABLE = False
+if QISKIT_AVAILABLE:
+    from qiskit import Aer, ClassicalRegister, QuantumCircuit, QuantumRegister, execute
 
 
 def grover_search(number_of_qubits: int = 2):