Add attribute "type" and let attribute "name" be user INPUT

[maroshmka]

We currently describe rules as follows:

{
        "name": NOT_NULL,
        "columns": ["status", "market", "src", "dst"], 
}

Which doesn't make sense, e.g. in case of sql rules, cause name is "SQL" and then user can't name their rule (only in description).

Lets rename "name" -> "type" as it is type. Lets keep "name" attribute for user input, also keep description, e.g.:

{
        "type": SQL,
        "name": "Margin is OK"
        "description": "we check if margin is bigger than blabla and also",
        "sql": "select 1", 
}