added src catalog and plant class

src/plant.py

@@ -0,0 +1,33 @@
+from pygame.sprite import Sprite
+
+class Plant(Sprite):
+    def __init__(self,species,location,is_ill,pic_path):
+        super.__init__()
+        self.species=species
+        self.location=location
+        self.is_ill=is_ill
+
+        if species=="carrot":
+            self.growth_time=100
+            self.weight=50
+            self.fertilizer="carrot_fertilizer"
+            self.pic_path="assets/Carrot.png"
+        
+        if species=="beetroot":
+            self.growth_time=200
+            self.weight=200
+            self.fertilizer="beetroot_fertilizer"
+            self.pic_path="assets/Beetroot.png"
+
+        if species=="potato":
+            self.growth_time=100
+            self.weight=100
+            self.fertilizer="potatoe_fertilizer"
+            self.pic_path="assets/Potato.png"
+
+        if species=="wheat":
+            self.growth_time=250
+            self.weight=75
+            self.fertilizer="wheat_fertilizer"
+            self.pic_path="assets/Wheat.png"
+