support for V ORM

[daniel-le97]

Now that V ORM allows mutable Connections via vlang/v#22684,
integration of the ORM does not require major workarounds or creating separate DB connections

Example usage

module main

import vsql

struct Product {
	id           int
	product_name string
	price        f64
}

fn main() {
	mut db := vsql.open('test.vsql')!

	sql db {
		create table Product
	}!
}

Tests

Tests can be run by either of the following

v -stats test ./vsql/orm_test.v

or

make orm-test

This implementation does take code/ideas from the initial work done on this in #102

It also implements most of the same test done in the original work.

The only change i see is that in this implementation, @[primary] attributes are also not supported as they will break delete queries. This can easily be changed tho.

Not Supported

• enums for field values
• default attribute
• unique attribute
• primary attribute

fixes #90

[elliotchance]

I'm just adding a note here for me to add this to the docs.

[daniel-le97]

Sorry for not cleaning this up, i have now removed comments/ commented code that do not add context

[elliotchance]

I fixed the docs CI job and ran v fmt in #201, so please rebase.

Also, can you add a section to https://github.com/elliotchance/vsql/blob/main/docs/testing.rst#test-suites to add orm-test as its own suite.

[elliotchance]

This is now fixed: #203