chore: add package level comments

solutions/12/q1200/solution.go

@@ -1,3 +1,4 @@
+// Package q1200 implements a solution for https://leetcode.com/problems/minimum-absolute-difference/
 package q1200
 
 import (

solutions/12/q1207/solution.go

@@ -1,3 +1,4 @@
+// Package q1207 implements a solution for https://leetcode.com/problems/unique-number-of-occurrences/
 package q1207
 
 import "slices"

solutions/12/q1226/solution.go

@@ -1,3 +1,4 @@
+// Package q1226 implements a solution for https://leetcode.com/problems/the-dining-philosophers/
 package q1226
 
 import "sync"

solutions/12/q1266/solution.go

@@ -1,3 +1,4 @@
+// Package q1266 implements a solution for https://leetcode.com/problems/minimum-time-visiting-all-points/
 package q1266
 
 func abs(i int) int {

solutions/12/q1268/solution.go

@@ -1,3 +1,4 @@
+// Package q1268 implements a solution for https://leetcode.com/problems/search-suggestions-system/
 package q1268
 
 import "slices"

solutions/12/q1292/solution.go

@@ -1,3 +1,4 @@
+// Package q1292 implements a solution for https://leetcode.com/problems/maximum-side-length-of-a-square-with-sum-less-than-or-equal-to-threshold/
 package q1292
 
 func pfSum(mat [][]int) [][]int {