NMRium json to jcamp conversion

[vcnainala]

• Tools/scripts to offer conversion
• Examples and test cases to check if the new schemas break the conversion

[hamed-musallam]

@CS76

The data migration can be done with nmr-load-save package, We already have an API in the nmrxiv, or we can use the new one provided in nmrKit, or directly utilize the package.