Adds SQLite syntax

[belchior]

Breaking changes

This PR setup the minimum rust version to 1.62.0

New features

Adds SQLite syntax support, you can enable it using

# Cargo.toml

sql_query_builder = { version = "2.x.x", features = ["sqlite"] }

The current release adds suppport for the following commands

• crud operations with: select, insert, update, delete
• transaction with: begin, savepoint, release, rollback, commit, end

Example

use sql_query_builder as sql;

let update_orders = sql::Update::new()
  .update("orders")
  .set("items = $1")
  .where_clause("login = $2");

let insert_address = sql::Insert::new()
  .insert_into("address(login, contry, postcard)")
  .values("($2, 'Bar', '01234000')");

let query = sql::Transaction::new()
  .begin("")
  .update(update_orders)
  .insert(insert_address)
  .end("")
  .to_string();

println!("{query}");

-- indented for readability
BEGIN;
UPDATE orders SET items = $1 WHERE login = $2;
INSERT INTO address(login, contry, postcard) VALUES ($2, 'BR', '01234000');
END;