Add from_dict to HFDatasetDataModule

[akoumpa]

What does this PR do ?

In HF you can do:

from datasets import Dataset
my_data = {"a": [1, 2, 3]}
dataset = Dataset.from_dict(my_data)

Adding support for the following:

    data = {'text': "Below is an instruction that describes a task, paired with an input that "}

    datamodule = llm.HFDatasetDataModule.**from_dict(
        {"text": [data['text'] for _ in range(101)]},** 
        split='train',
        global_batch_size=4,
        micro_batch_size=1,
    )

Collection: [Note which collection this PR will affect]

Changelog

• Add specific line by line info of high level changes in this PR.

Usage

• You can potentially add a usage example below

# Add a code snippet demonstrating how to use this 

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• New Feature
• Bugfix
• Documentation

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[github-actions]

beep boop 🤖: 🙏 The following files have warnings. In case you are familiar with these, please try helping us to improve the code base.

---

Your code was analyzed with PyLint. The following annotations have been identified:

************* Module nemo.collections.llm.gpt.data.hf_dataset
nemo/collections/llm/gpt/data/hf_dataset.py:174:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/data/hf_dataset.py:181:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/data/hf_dataset.py:207:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/data/hf_dataset.py:233:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/data/hf_dataset.py:237:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/data/hf_dataset.py:241:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/data/hf_dataset.py:244:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/data/hf_dataset.py:247:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/data/hf_dataset.py:250:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/gpt/data/hf_dataset.py:253:4: C0116: Missing function or method docstring (missing-function-docstring)

-----------------------------------
Your code has been rated at 9.17/10

---

Thank you for improving NeMo's documentation!

[hemildesai]

Can you move all datasets import to the top level? Since there's already from datasets import load_dataset at the top level, I think it's better to move everything to the top

[hemildesai]

Can you move this to top level? Same as the other comment

[github-actions]

[🤖]: Hi @akoumpa 👋,

We wanted to let you know that a CICD pipeline for this PR just finished successfully

So it might be time to merge this PR or get some approvals

I'm just a bot so I'll leave it you what to do next.

//cc @pablo-garay @ko3n1g

[ericharper]

LGTM. Thanks!

Can move the imports back to the top in a follow up PR if needed.