internal/minioclient: instrument nontrivial functions with monkit's Task

[avinilcode]

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[avinilcode]

Please review and let me know if there any changes to be done

[avinilcode]

Please review and merge, add hacktoberfest-accepted label, so that it can be part of hacktoberfest2022

[avinilcode]

please review and please tag this repo with hacktoberfest tag and merge thanks for the opportunity

[halkyon]

@avinilcode could you please squash the commits?