Scrapy the azure-rest-api-specs to calculate operation level sample coverage

[xboxeer]

We need one more level down of our sample coverage, from RP to Operation level, what we have now is

1. API Operations in rest api swagger
2. API Operation examples in rest api swagger operation x-ms-examples field
3. A list of samples we collected in this repo and their corresponding language

What we want to achieve
We'd like to know that for every rest api operation, if they have x-ms-examples, they should have corresponding language's sample
The final data should be represented in a power bi report

[weidongxu-microsoft]

@haolingdong-msft See if you are interested.