Create and test `edit_property_field()` - a part of `create_properties_template()`

[signekb]

Signature: edit_property_field(properties: json, field: str, value: str) -> json:

Arguments:

• properties: json with properties
• field: string with field to edit
• value: string with value to add to the field

Returns: json with properties with a field edited

Context: see the create_properties_template diagram

This function edits the field values to the defaults we use.

@signekb: I'm guessing we'll use this several times and might include a edit_property_fields() function - like with create_dir()and create_dirs(). What say you, @lwjohnst86 ?

[martonvago]

Is this basically the same thing as https://github.com/seedcase-project/seedcase-sprout/issues/576 ? If so, we could rename edit_resource_properties_field > edit_property_field or edit_properties_field.

[signekb]

@lwjohnst86 ?