Made main.py a little lighter in generic var and functionality, added led functionality.

var.py

@@ -0,0 +1,20 @@
+from machine import Pin, I2C
+from ssd1306 import SSD1306_I2C
+import time
+
+i2c=I2C(0,sda=Pin(0), scl=Pin(1), freq=400000)
+oled = SSD1306_I2C(128, 32, i2c)
+button1 = Pin(19, Pin.IN, Pin.PULL_DOWN) #Up
+button2 = Pin(20, Pin.IN, Pin.PULL_DOWN) #Right
+button3 = Pin(18, Pin.IN, Pin.PULL_DOWN) #Down
+button4 = Pin(21, Pin.IN, Pin.PULL_DOWN) #Left
+button5 = Pin(27, Pin.IN, Pin.PULL_DOWN) #Menu_1 / enter
+button6 = Pin(22, Pin.IN, Pin.PULL_DOWN) #Menu_2
+button7 = Pin(28, Pin.IN, Pin.PULL_DOWN) #Menu_3
+button8 = Pin(26, Pin.IN, Pin.PULL_DOWN) #Menu_4
+buzzer = Pin(2, Pin.OUT)
+
+version = 0.1
+
+buzzer_value = 0
+