fix(codegen): trim the sql string before processing

[bertyhell]

to avoid trailing whitespace

example:

SELECT count(*) as count
FROM autoTags
                                    <<<< empty trailing line

would be included in the ts file with a trailing newline:

export function countAutoTags(db: Database): CountAutoTagsResult | null {
  const sql = `
	SELECT count(*) as count
	FROM autoTags
	
	`;

This PR trims that sql before it gets analysed:

export function countAutoTags(db: Database): CountAutoTagsResult | null {
	const sql = `
	SELECT count(*) as count
	FROM autoTags
	`

[wsporto]

I think we could avoid trimming the SQL. Keeping it unchanged might help users spot extra spaces or formatting issues directly in the .sql file.

I’m going to adjust the inconsistencies between the generators (pg, mysql, sqlite).