move requirements.txt in repo into yaml

[hchandola]

1. Move requirements.txt pip packages list into the yml files for github action.
2. Disable automl github action temporarily since the current automl forecasting notebook in master requires manually adding training pipeline run id.

[deeptim123]

can we disable only forecasting and atleast running training for now?

[hchandola]

sign off communicated offline by @deeptim123