Initial travler-rotor library scaffolding

Extract Gabe Emerson's Trav'ler rotor scripts into a proper Python
library with firmware protocol abstraction (HAL 2.05 + HAL 0.0.00),
Hamlib rotctld TCP server, Click CLI, and isolated leap-frog algorithm
with the elevation copy-paste bug fixed.

Trav-ler-Rotor-For-HAL-2.05/travler_init.py

@@ -0,0 +1,45 @@
+#Python program to initialize Winegard Trav'ler antenna 
+#(allow to home, then kill TV satellite search)
+#Version 2.0B For HAL v2.05, NOT for HAL v0.0
+#Gabe Emerson / Saveitforparts 2024, Email: gabe@saveitforparts.com
+
+import serial
+
+#define "antenna" as the serial port device to interface with
+antenna = serial.Serial(
+	port='/dev/ttyUSB0',             #pass this from command line in future?
+	baudrate = 57600,
+	parity=serial.PARITY_NONE,
+	stopbits=serial.STOPBITS_ONE,
+	bytesize=serial.EIGHTBITS,
+	timeout=1)
+
+print ('Antenna connected on ', antenna.port)
+
+print ('Waiting for system to boot, ensure IDU is powered on.')
+
+while 1:
+	data = antenna.readline().decode(errors='ignore').strip()  #read serial stream from antenna
+	print(data)
+	if "NoGPS" in data or "No LNB Voltage" in data: #Initial homing is finished, Trav'ler wants to look for TV sat
+		print('Antenna motor homing finished.')
+		print('Cancelling Search task.')
+		antenna.write(bytes(b'q\r')) #go back to root menu in case firmware was left in a submenu
+		antenna.write(bytes(b'\r')) #clear firmware prompt to avoid unknown command errors
+		antenna.write(bytes(b'ngsearch\r')) #enter ngsearch submenu (for newer HAL versions)
+		antenna.write(bytes(b's\r')) #kill Search task
+		antenna.write(bytes(b'q\r')) #go back to root menu 
+		antenna.write(bytes(b'\r'))
+		print('Antenna is ready for rotor script.')
+		break
+	else:
+		continue
+	
+antenna.close()
+exec(open("travler_rotor.py").read())
+exit()
+
+
+
+
+