Format JSON Data in String Fields

[raghavs046]

PR Description:

This fix script will improve the readability of JSON data in string field on forms.
This will also avoid a click to see the formatted data through "json_view" attribute.

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[rohi-v]

Hi @raghavs046

For Hacktoberfest, we’re aiming for high-quality contributions providing real-world use developer cases.

Please also include a reference to the standard documentation, as this is more an example of how to use the standard function, and it is useful to have the links here in case they want to read more about it.

Also please provide the details or screenshot in readme file of what value does 'u_json_field' holds and how it looks after the update.

[raghavs046]

@rohi-v This is a real word example but sometime we do not have access to instances where we have implemented the solution. So I implemented it again in dev.
I have made the changes you mentioned.

[rohi-v]

Looks Good, Thank you for your contribution.