Feature Request: allow serializing T to create/update/replace record

[jomhyre]

It would be useful to have overloads of Create/Update/Replace which can serialize a given object, similarly to how we have RetrieveRecord which deserializes the response to T. It would help to avoid duplication and mistakes which seem to come with using Fields

a brief example of how I'd probably use it:

public class MyAirtableRecord
{
    [JsonPropertyName("fldrabcdefg")]
    public string? Description { get; set; }

    [JsonPropertyName("fldrhijklmn")]
    public AirtableAttachment? File { get; set; }
    
    [JsonPropertyName("fldr1234567")]
    public int? Rating { get; set; }
}

public class CustomAirtableClient
{
    private readonly AirtableBase _base;
    private readonly string _tableId;

    // some initialization...

    public async Task<MyAirtableRecord> Get(string recordId)
    {
        var record = await this._base.RetrieveRecord<MyAirtableRecord>(_tableId, recordId, returnFieldsByFieldId: true);
        return record.Record;
    }

    public async Task<string> Create(MyAirtableRecord data)
    {
        var record = await this._base.CreateRecord(_tableId, data);
        return record.Id;
    }

    public async Task Update(string recordId, MyAirtableRecord data)
    {
        await this._base.UpdateRecord(_tableId, recordId, data);
    }
}

At least one issue comes to mind that would need to be dealt with:

When updating, how do we handle null values? You probably want to ignore them in most cases, but you may sometimes want to actually clear a given column in airtable - in that case it might be easiest to say that you need to fallback to using a Fields.