refactor: split CLI jp command

[eddycharly]

Signed-off-by: Charles-Edouard Brétéché charles.edouard@nirmata.com

Explanation

This PR refactors the jp command into sub commands:

• parse parses a jmespath expression and shows the AST
• function shows functions informations
• query runs queries against objects

Open questions:

• shall we support multiple queries in the same command ?

With this change, the query being executed is written in the console output, this can be a problem if the tool is used in automation:

$ echo '{"foo": "BAR"}' | kyverno jp query 'to_lower(foo)'
Reading from terminal input.
Enter input object and hit Ctrl+D.
# to_lower(foo)
"bar"

[codecov]

Codecov Report

Merging #5566 (c3852e4) into main (c6ba1c8) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #5566   +/-   ##
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  Coverage   34.62%   34.62%           
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  Files         190      190           
  Lines       21106    21106           
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  Hits         7307     7307           
  Misses      12986    12986           
  Partials      813      813           

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[realshuting]

shall we support multiple queries in the same command ?

We can start with one query per command IMO.

[realshuting]

Can you look at sonatype-lift comments?