Adds github workflow ci action #2

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1 error and 7 warnings

Process completed with exit code 1.

Application.get_env/3 is discouraged in the module body, use Application.compile_env/3 instead

String.strip/1 is deprecated. Use String.trim/1 instead

Application.get_env/2 is discouraged in the module body, use Application.compile_env/3 instead

use Bitwise is deprecated. import Bitwise instead

Integer.to_char_list/2 is deprecated. Use Integer.to_charlist/2 instead

function package/0 is unused