Update issue templates

Author: obalunenko

.github/ISSUE_TEMPLATE/puzzle-solution.md

@@ -0,0 +1,10 @@
+---
+name: Puzzle Solution
+about: Implement new puzzle zolution
+title: Implement solution for puzzle {year}/{day}
+labels: ''
+assignees: ''
+
+---
+
+Implement solution for puzzle https://adventofcode.com/{year}/day/{day}