Add extra nushell solution for 2022 day 01

2022/day-01/extra/part1.nu

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+source sums.nu
+
+def main [path = "../inputs/puzzle.txt"] {
+    sums $path
+        | math max
+}

2022/day-01/extra/part2.nu

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+source sums.nu
+
+def main [path = "../inputs/puzzle.txt"] {
+    sums $path
+        | sort -r
+        | take 3
+        | math sum
+}

2022/day-01/extra/sums.nu

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+def sums [path: string] {
+    open $path
+        | split row "\n\n"
+        | each {
+            split row "\n"
+                | into int
+                | math sum
+        }
+}