CI/CD for models

[Kaushal1011]

• [x] Create S3 bucket or Drive folder
• [ ] write code that uploads (water.model, light.model, heat.mode) to S3 or Drive. (If something already exists this replaces that)
• [x] ~create a get endpoint for each environment. when this endpoint is hit the following things happen.~
• [x] already existing model in tfmodel directory gets deleted. new model (of the same name) is downloaded from S3 bucked or Drive folder and put into tfmodel directory. at the start of application