[DBAL-1779] Fix string column type declarations with whitespace on SQLite

[deeky666]

When introspecting column types from a table in SQLite that has not been created by Doctrine and contains whitespaces in the DDL, DBAL fails to introspect the column types correctly.

Works

CREATE TABLE dbal_1779 (
    foo VARCHAR(64),
    bar TEXT(100)
)

Does not work

CREATE TABLE dbal_1779 (
    foo VARCHAR (64) ,
    bar TEXT (100)
)

fixes #1339
closes/supersedes #921

[billschaller]

Probably needs also a testListTableColumnsWithoutWhitespacesInTypeDeclarations, too.

[deeky666]

@zeroedin-bill this is already covered by all the other DBAL tests

[billschaller]

k