chore: add package level comments

solutions/23/q2300/solution.go

@@ -1,3 +1,4 @@
+// Package q2300 implements a solution for https://leetcode.com/problems/successful-pairs-of-spells-and-potions/
 package q2300
 
 import "slices"

solutions/23/q2336/solution.go

@@ -1,3 +1,4 @@
+// Package q2336 implements a solution for https://leetcode.com/problems/smallest-number-in-infinite-set/
 package q2336
 
 import "container/heap"

solutions/23/q2352/solution.go

@@ -1,3 +1,4 @@
+// Package q2352 implements a solution for https://leetcode.com/problems/equal-row-and-column-pairs/
 package q2352
 
 import "strings"

solutions/23/q2390/solution.go

@@ -1,3 +1,4 @@
+// Package q2390 implements a solution for https://leetcode.com/problems/removing-stars-from-a-string/
 package q2390
 
 func removeStars(s string) string {