Add examples

What's Changed

• Add result in examples by @devlights in #700
• Add result in examples (examples/basic/defers) by @devlights in #701
• Add result in examples (examples/basic/embeds) by @devlights in #702
• Add result in examples (examples/basic/enum) by @devlights in #703
• Add time_calc_nextmonth.go by @devlights in #704
• Add time_daysinmonth.go by @devlights in #705
• Add result in examples by @devlights in #706
• Add examples/basic/syncs/use_pool.go by @devlights in #707
• Add everything_in_a_copy example by @devlights in #708
• Add strings.Clone example by @devlights in #709
• Add using strings.Clone() example by @devlights in #710

Full Changelog: v0.5.8...v0.5.9