Closes #345 | Implemented dataloader for vlsp2016_ner

[luckysusanto]

Closes #345

Checkbox

• [X] Confirm that this PR is linked to the dataset issue.
• [X] Create the dataloader script seacrowd/sea_datasets/vlsp2016_ner/vlsp2016_ner.py (please use only lowercase and underscore for dataset naming).
• [X] Provide values for the _CITATION, _DATASETNAME, _DESCRIPTION, _HOMEPAGE, _LICENSE, _URLs, _SUPPORTED_TASKS, _SOURCE_VERSION, and _SEACROWD_VERSION variables.
• [X] Implement _info(), _split_generators() and _generate_examples() in dataloader script.
• [X] Make sure that the BUILDER_CONFIGS class attribute is a list with at least one SEACrowdConfig for the source schema and one for a seacrowd schema.
• [X] Confirm dataloader script works with datasets.load_dataset function.
• [X] Confirm that your dataloader script passes the test suite run with python -m tests.test_seacrowd seacrowd/sea_datasets/vlsp2016_ner/vlsp2016_ner.py.
• [ ] If my dataset is local, I have provided an output of the unit-tests in the PR (please copy paste). This is OPTIONAL for public datasets, as we can test these without access to the data files.

[MJonibek]

@luckysusanto Everything works, only formatting is needed. Can you please run

make check_file=seacrowd/sea_datasets/vlsp2016_ner/vlsp2016_ner.py

to format the file.

To solve three issues from flake8 you need to remove import os, and also add \ at the end of 17 and 47 lines (descriptions of the dataset) to remove trailing whitespace.

[MJonibek]

@luckysusanto I saw your issue with formatting commands in the discord. I formatted this file myself.

[MJonibek]

Merged (forgot to approve)