Add time series data - stock market
Can I use instructions present in below link for time series dataset as well? 
https://github.com/huggingface/datasets/blob/master/ADD_NEW_DATASET.md  cc'ing @kashif and @NielsRogge for visibility! @INF800 happy to add this dataset! I will try to set a PR by the end of the day... if you can kindly point me to the dataset? Also, note we have a bunch of time series datasets checked in e.g. `electricity_load_diagrams` or `monash_tsf`, and ideally this dataset could also be in a similar format.  Thankyou. This is how raw data looks like before cleaning for an individual stocks:

1. https://github.com/INF800/marktech/tree/raw-data/f/data/raw
2. https://github.com/INF800/marktech/tree/raw-data/t/data/raw
3. https://github.com/INF800/marktech/tree/raw-data/rdfn/data/raw
4. https://github.com/INF800/marktech/tree/raw-data/irbt/data/raw
5. https://github.com/INF800/marktech/tree/raw-data/hll/data/raw
6. https://github.com/INF800/marktech/tree/raw-data/infy/data/raw
7. https://github.com/INF800/marktech/tree/raw-data/reli/data/raw
8. https://github.com/INF800/marktech/tree/raw-data/hdbk/data/raw

> Scraping is automated using GitHub Actions. So, everyday we will see a new file added in the above links.

I can rewrite the cleaning scripts to make sure it fits HF dataset standards. (P.S I am very much new to HF dataset)

The data set above can be converted into univariate regression / multivariate regression / sequence to sequence generation dataset etc. So, do we have some kind of transformation modules that will read the dataset as some type of dataset (`GenericTimeData`) and convert it to other possible dataset relating to a specific ML task. **By having this kind of transformation module, I only have to add data once** and use transformation module whenever necessary

Additionally, having some kind of versioning for the dataset will be really helpful because it will keep on updating - especially time series datasets  thanks @INF800 I'll have a look. I believe it should be possible to incorporate this into the time-series format.
## Adding a Time Series Dataset
- **Name:** 2min ticker data for stock market 
- **Description:** 8 stocks' data collected for 1month post ukraine-russia war. 4 NSE stocks and 4 NASDAQ stocks. Along with technical indicators (additional features) as shown in below image
- **Data:** Collected by myself from investing.com
- **Motivation:** Test applicability of transformer based model on stock market / time series problem

![image](https://user-images.githubusercontent.com/45640029/161904077-52fe97cb-3720-4e3f-98ee-7f6720a056e2.png)