feat: implement UnmarshalerError #624

Job	Run time
lint	40s
Fuzzing Test	1m 18s
Test with -race (ubuntu-latest, 1.21)	1m 20s
Test with -race (windows-latest, 1.21)	1m 51s
page	45s
Test in i386 (ubuntu-latest, 1.22)	53s
Test with -race (windows-latest, 1.23)	2m 32s
Test with -race (windows-latest, 1.22)	1m 51s
Test with -race (ubuntu-latest, 1.22)	32s
ycat	12s
Test in i386 (windows-latest, 1.22)	1m 34s
Test in i386 (ubuntu-latest, 1.21)	59s
Test with -race (macos-latest, 1.23)	25s
Test with -race (macos-latest, 1.22)	26s
Test in i386 (windows-latest, 1.21)	1m 24s
Test in i386 (windows-latest, 1.23)	1m 33s
Test in i386 (ubuntu-latest, 1.23)	22s
Coverage	32s
Test with -race (macos-latest, 1.21)	26s
Test with -race (ubuntu-latest, 1.23)	34s
	20m 9s

Provide feedback