Add PID controller implementation

Author: TahmidSwad

control_algorithms/pid.py

@@ -11,14 +11,8 @@
 """
 
 
-<<<<<<< HEAD
-class PID:
-
-    def __init__(self, kp: float, ki: float, kd: float, setpoint: float = 0):
-=======
 class pid:
     def __init__(self, Kp: float, Ki: float, Kd: float, setpoint: float = 0):
->>>>>>> 588538eaddcee6fa4733a1775487123c0ed09a43
         """
         Initialize the PID controller.