Do not ignore errors ever

[carpawell]

Expected Behavior

Never ignore errors in gonang.

Current Behavior

Code may ignore some errors (even if they are not expected at all, that is not good).

Possible Solution

Panic if an error is not expected at all.

Context

At least CLIs are affected: binding flags, getting flags, marking flags.
Some other places may be affected too.

[roman-khimov]

Narrow down the scope, please. This is too broad.

[carpawell]

Narrow down the scope, please.

Finding all the places == 90% of solving the issue. We do ignore errors sometimes (Context has 3 examples with cobra lib errs ignorance). What exact do you mean?