feat: jupiter support create templates from specified git branch

[sysulq]

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[codecov-commenter]

Codecov Report

Merging #505 (b33589d) into master (6ebee4c) will increase coverage by 1.41%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master     #505      +/-   ##
==========================================
+ Coverage   41.81%   43.22%   +1.41%     
==========================================
  Files          93      100       +7     
  Lines        6139     6510     +371     
==========================================
+ Hits         2567     2814     +247     
- Misses       3375     3481     +106     
- Partials      197      215      +18     

Impacted Files	Coverage Δ
pkg/server/server.go	100.00% <ø> (+90.41%)	⬆️
pkg/core/cmd/cmd_new.go	46.06% <50.00%> (ø)
pkg/core/cmd/cmd_clean.go	55.55% <0.00%> (ø)
pkg/core/cmd/cmd_run.go	0.00% <0.00%> (ø)
pkg/core/cmd/banner.go	100.00% <0.00%> (ø)
pkg/core/cmd/cmd_update.go	69.56% <0.00%> (ø)
pkg/core/cmd/cmd_struct2interface.go	100.00% <0.00%> (ø)
pkg/core/cmd/cmd_init.go	75.00% <0.00%> (ø)

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