Add acf dump support

[rejedai]

Added ability to dump to acf format.

vdf.dumps(__test_acf, pretty=True, acf=True)

No modification is required for read, parser reads correctly, test code:

withopen("appmanifest_2348590.acf", "r") asread_acf:
__manifest_orig=read_acf.read()
read_acf.seek(0)
__manifest_dict=vdf.load(read_acf)
__manifest_dump=vdf.dumps(__manifest_dict, pretty=True, acf=True)
withopen("appmanifest_test.acf", "w") aswrite_acf:
vdf.dump(__manifest_dict, write_acf, pretty=True, acf=True)
print(f"Result: {__manifest_orig==__manifest_dump}")

output:

Result: True

md5sum:

❯ md5sum ./appmanifest_2348590.acf ffbafff6611f9be6bd95ff4b30d49f37 ./appmanifest_2348590.acf
❯ md5sum ./appmanifest_test.acf ffbafff6611f9be6bd95ff4b30d49f37 ./appmanifest_test.acf