docs: add 1800

Author: Aden-Q

Diff for: src/1800.Maximum-Ascending-Subarray-Sum.py

@@ -0,0 +1,16 @@
+class Solution:
+    def maxAscendingSum(self, nums: List[int]) -> int:
+        maxSum = 0
+        currSum = 0
+        prev = 0
+
+        for num in nums:
+            if num > prev:
+                currSum += num
+            else:
+                currSum = num
+
+            prev = num
+            maxSum = max(maxSum, currSum)
+
+        return maxSum