feat: Support for aligning numbers separately from strings

[DenverCoder1]

def test_number_alignments():
    text = t2a(
        header=["1.1.1", "G", "Long Header", "Another Long Header"],
        body=[[100.00001, 2, 3.14, 6.28], [10.0001, 22.0, 2.718, 1.618]],
        alignments=[Alignment.LEFT, Alignment.RIGHT, Alignment.CENTER, Alignment.RIGHT],
        number_alignments=[Alignment.DECIMAL, Alignment.LEFT, Alignment.RIGHT, Alignment.DECIMAL],
    )
    expected = (
        "╔══════════════════════════════════════════════════════╗\n"
        "║ 1.1.1          G   Long Header   Another Long Header ║\n"
        "╟──────────────────────────────────────────────────────╢\n"
        "║ 100.00001   2             3.14                 6.28  ║\n"
        "║  10.0001    22.0         2.718                 1.618 ║\n"
        "╚══════════════════════════════════════════════════════╝"
    )
    assert text == expected

def test_single_number_alignments():
    text = t2a(
        header=["1.1.1", "G", "Long Header", "S"],
        body=[[100.00001, 2, 3.14, 6.28], [10.0001, 22.0, 2.718, 1.618]],
        alignments=[Alignment.LEFT, Alignment.CENTER, Alignment.CENTER, Alignment.RIGHT],
        number_alignments=Alignment.RIGHT,
    )
    expected = (
        "╔════════════════════════════════════════╗\n"
        "║ 1.1.1        G     Long Header       S ║\n"
        "╟────────────────────────────────────────╢\n"
        "║ 100.00001      2          3.14    6.28 ║\n"
        "║   10.0001   22.0         2.718   1.618 ║\n"
        "╚════════════════════════════════════════╝"
    )
    assert text == expected