Add support to print the version list of target package

[LinuxSuRen]

With this feature, you can print the version list like blew

➜  http-downloader git:(master) ✗ ./bin/hd get jenkins-zh/jenkins-cli --print-version --print-version-count=2 --provider gitee
start to fetch the config
v0.0.38
v0.0.37

fix #129

[codecov]

Codecov Report

Merging #131 (ccb8751) into master (ad87434) will decrease coverage by 0.47%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #131      +/-   ##
==========================================
- Coverage   19.07%   18.60%   -0.48%     
==========================================
  Files          20       20              
  Lines         865      887      +22     
==========================================
  Hits          165      165              
- Misses        685      707      +22     
  Partials       15       15              

Flag	Coverage Δ
unittests	18.60% <0.00%> (-0.48%)	⬇️

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Impacted Files	Coverage Δ
cmd/get.go	0.00% <0.00%> (ø)
pkg/release.go	0.00% <0.00%> (ø)

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