feat: ignore previous benchmark if exit in error (#16)

[mauriciocm9]

*Issue #16

Description of changes:

If benchmark in base commit fails, cob exit with error. This PR ignore errors in previous benchmark instead of exit with error.

What did change?: Create a method to run previous benchmark, if benchmark fail, check for exit status 1 message.

For benchmark that use a logger, parse.ParseSet could fail due to malformed benchmark line that's why a new function for the parse is created that behave similar to the one in the library.

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