Add ability to set default naming convention

[Odonno]

Add default naming convention property so that we can simply set a default naming convention that will be apply on every field like this:

var options = new CborOptions
{
    DefaultNamingConvention = new SnakeCaseNamingConvention(),
};

It will still be overriden by the use of CborNamingConventionAttribute.

[mcatanzariti]

Hello,

Could you check 373266e, please?
It should already implement what you want.

Thank you,

Michaël

[Odonno]

Hello Michaël,

I don't understand this.

First, I don't understand the unecessary complexity of this commit. Isn't it more simple to pass a default naming policy? Secondly, it expect to pass a Type where you can simply pass a a INamingConvention which IMO is way better (in term of usability and maintainability).

Also, what is the point of Lowercase and Uppercase convention? My end goal is to have feature parity with JsonNamingConvention which mean having the following policies:

• default = null (PascalCase)
• CamelCase
• LowerSnakeCase (or pure SnakeCase)
• UpperSnakeCase
• LowerKebabCase (or pure KebabCase)
• UpperKebabCase

Furthermore, I will add tests to prevent regression.

[mcatanzariti]

Hi @Odonno,

I understand & I agree with you.
Please can you merge with your modifications and implement what you suggested?

Thank you <3

[Odonno]

• Passing an object instead of a Type for default naming convention
• Added missing naming convention like explicited, to have feature parity with JsonNamingPolicy
• Updated and added some tests

I let the Lower and Upper conventions because they may be useful for some.. If you don't see the point of those, I'll let you remove the code.