Add GitHub workflow using perlrdf/devops actions

[zmughal]

• Remove Travis CI
• Add GitHub workflow using perlrdf/devops actions

[zmughal]

Besides the failures due to #164, some of the lines in t/parser_serializer_api.t are duplicated as is() tests when the equivalent like() is there for multiple serializers.

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https://github.com/kasei/attean/blob/c43327529f59819b330aa6f6c60b16287349ae38/t/parser_serializer_api.t#L35

https://github.com/kasei/attean/blob/c43327529f59819b330aa6f6c60b16287349ae38/t/parser_serializer_api.t#L40

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https://github.com/kasei/attean/blob/c43327529f59819b330aa6f6c60b16287349ae38/t/parser_serializer_api.t#L38

https://github.com/kasei/attean/blob/c43327529f59819b330aa6f6c60b16287349ae38/t/parser_serializer_api.t#L33

[zmughal]

This CI workflow now passes https://github.com/zmughal-contrib/attean/actions/runs/5845450384.

[kasei]

So this is good to merge?

[zmughal]

Yes, it should be ready.