fix(ruby): overall improvements

[TorstenDittmann]

• add param checking

before:

def update_document(collection_id:, document_id:, data:, read: [], write: [])
    path = '/database/collections/{collectionId}/documents/{documentId}'
        .gsub('{collectionId}', collection_id)
        .gsub('{documentId}', document_id)

    params = {
        'data': data, 
        'read': read, 
        'write': write
    }

    return @client.call('patch', path, {
        'content-type' => 'application/json',
    }, params);
end

after:

def update_document(collection_id, document_id, data, read = nil, write = nil)
    if collection_id.nil?
        raise Appwrite::Exception.new('Missing required parameter: "collectionId"')
    end

    if document_id.nil?
        raise Appwrite::Exception.new('Missing required parameter: "documentId"')
    end

    if data.nil?
        raise Appwrite::Exception.new('Missing required parameter: "data"')
    end

    path = '/database/collections/{collectionId}/documents/{documentId}'
        .gsub('{collectionId}', collection_id)
        .gsub('{documentId}', document_id)

    params = {}

    if !execute.nil?
        params[:data] = data
    end

    if !execute.nil?
        params[:read] = read
    end

    if !execute.nil?
        params[:write] = write
    end

    return @client.call('patch', path, {
        'content-type' => 'application/json',
    }, params);
end