fix: Add __eq__, __hash__ to SparkSource for comparision

Signed-off-by: tanlocnguyen <tanlocnguyen296@gmail.com>

Author: ElliotNguyen68

sdk/python/feast/infra/offline_stores/contrib/spark_offline_store/spark_source.py

@@ -184,6 +184,36 @@ def get_table_query_string(self) -> str:
         df.createOrReplaceTempView(tmp_table_name)
 
         return f"`{tmp_table_name}`"
+    
+    def __eq__(self, other):
+        if other is None:
+            return False
+
+        if not isinstance(other, SparkSource):
+            raise TypeError("Comparisons should only involve SparkSource class objects.")
+
+        if (
+            self.name != other.name
+            or self.timestamp_field != other.timestamp_field
+            or self.created_timestamp_column != other.created_timestamp_column
+            or self.field_mapping != other.field_mapping
+            or self.date_partition_column != other.date_partition_column
+            or self.description != other.description
+            or self.tags != other.tags
+            or self.owner != other.owner
+        ):
+            return False
+        if self.table != other.table:
+            return False
+        if self.query != other.query:
+            return False
+        if self.path != other.path:
+            return False
+
+        return True
+
+    def __hash__(self):
+        return super().__hash__()
 
 
 class SparkOptions: