feat: adding auto download for sources via edit and JBANG_DOWNLOAD_SOURCES=true

[maxandersen]

adding option to have jbang download sources for dependencies.

approach is a bit a naive and will only work if all //DEPS resolves properly but simply
takes the resolved set and then one by one try resolve matching sources classifier.

[codecov]

Codecov Report

Base: 0.00% // Head: 0.00% // No change to project coverage 👍

Coverage data is based on head (6bd8b4d) compared to base (ce15aae).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #1539   +/-   ##
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  Coverage   0.00%   0.00%           
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  Files        110     110           
  Lines       6984    7014   +30     
  Branches    1141    1143    +2     
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- Misses      6984    7014   +30     

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Linux	0.00% <0.00%> (ø)
Windows	0.00% <0.00%> (ø)

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Impacted Files	Coverage Δ
...c/main/java/dev/jbang/cli/DependencyInfoMixin.java	0.00% <ø> (ø)
src/main/java/dev/jbang/cli/Edit.java	0.00% <0.00%> (ø)
.../java/dev/jbang/dependencies/ArtifactResolver.java	0.00% <0.00%> (ø)
...ava/dev/jbang/dependencies/DependencyResolver.java	0.00% <0.00%> (ø)
...in/java/dev/jbang/dependencies/DependencyUtil.java	0.00% <0.00%> (ø)
src/main/java/dev/jbang/util/Util.java	0.00% <0.00%> (ø)

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[maxandersen]

for now we'll change this to use JBANG_DOWNLOAD_SOURCES env var to turn on/off.

in future when we have the resolver pluggable/configurable we can expose a more explicit flag.

[maxandersen]

@fbricon fyi - if you set JBANG_DOWNLOAD_SOURCES=true env when running jbang it will soon resolve sources.

[quintesse]

LGTM. We do this quick & dirty solution and then do it properly once we factor out that resolver, as we discussed.

[fbricon]

you merged too soon ;-)

jbang-eclipse doesn't rely on jbang edit, but calls jbang info tools, that's when I expect sources to be downloaded

[maxandersen]

Jbang edit will do it automatically.

Set JBANG_DOWNLOAD_SOURCES=true to have it happen on any command.