modularized planting logic by splitting f2.py into main.py, pumpkins.py, and sunflowers.py; updated utilities and added .gitignore

sunflowers.py

@@ -0,0 +1,17 @@
+from __builtins__ import *
+import utils
+
+
+def place(width, height):
+	utils.plant_grid(width, height, [Entities.Sunflower], 0.75, True)
+
+# Harvests all sunflowers in the specified area.
+#
+# The rules for sunflower harvesting is that we must harvest the flowers with the most petals first
+# as doing so gives us an 8x bonus.
+#
+# Parameters:
+#	width (int): The number of columns in the grid.
+#	height (int): The number of rows in the grid.
+#    flowers (list): A list of sunflower entities to be harvested.
+def harvest(width, height, flowers):