Unambiguously quote and escape properties in JSON path rendering

[kurtmckee]

This PR introduces the following change:

• Unambiguously quote and escape properties in JSON path rendering

Using the script from #1389, this is the new output with the changes in this branch:

$ python demo.py 
property=''             json_path="$['']"
property='['            json_path="$['[']"
property='.'            json_path="$['.']"
property='\\'           json_path="$['\\\\']"
property="'"            json_path="$['\\'']"
property=' '            json_path="$[' ']"
property='"'            json_path='$[\'"\']'
property='a[0]'         json_path="$['a[0]']"

Fixes #1389

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📚 Documentation preview 📚: https://python-jsonschema--1390.org.readthedocs.build/en/1390/

[Julian]

Thanks for the PR (and issue).

I think we should consider and look at jsonpath-ng at very least to start with for testing. It's possible in the future we should deprecate the attribute and replace it with one that returns an object from that library, but even before we do that we can at least use it in our test cases to:

• ensure all the tests you're adding actually are guarded to be valid JSON Paths
• ensure we have covered at least the cases that that library itself tests

Could you have a look at doing that? As I say I'm good with just adding it as a test dependency for the moment and evaluating the deprecation/changing the actual interface down the line.

[Julian]

Looks great, nice work. Really appreciated!