feat: use latest binary if plugin version is not specified

[adikari]

Added

1. Download the latest version of binary if plugin version is not specified
2. Log plugin binary version

[codecov-io]

Codecov Report

Merging #49 (f99aee4) into master (6c86c07) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master      #49   +/-   ##
=======================================
  Coverage   79.56%   79.56%           
=======================================
  Files           4        4           
  Lines         137      137           
=======================================
  Hits          109      109           
  Misses         22       22           
  Partials        6        6           

Impacted Files	Coverage Δ
main.go	0.00% <0.00%> (ø)

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[adikari]

@all-contributors please add @adikari for code, example, doc, maintenance, review, test, infra

[allcontributors]

@adikari

I've put up a pull request to add @adikari! 🎉