Example Sample repos for configuring lambda functions (via amplify), with different runtimes (Python, Java, etc.)

**Is your feature request related to a problem? Please describe.**
The Amplify documentation briefly suggests that lambda functions with Python runtimes can be setup in Amplify, but there are no docs on configuring lambda functions with python runtimes. Here is a sample structure taken from the amplify repo [here](https://docs.amplify.aws/react/reference/project-structure/).

```
├── amplify/
│ ├── auth/
│ │ ├── custom-message/
│ │ │ ├── custom-message.tsx
│ │ │ ├── handler.ts
│ │ │ ├── package.json
│ │ │ └── resource.ts
│ │ ├── post-confirmation.ts
│ │ ├── pre-sign-up.ts
│ │ ├── resource.ts
│ │ └── verification-email.tsx
│ ├── data/
│ │ ├── resolvers/
│ │ │ ├── list-featured-posts.ts
│ │ │ └── list-top-10-posts.ts
│ │ ├── resource.ts
│ │ └── schema.ts
│ ├── jobs/
│ │ ├── monthly-report/
│ │ │ ├── handler.ts
│ │ │ └── resource.ts
│ │ ├── process-featured-posts/
│ │ │ ├── handler.py
│ │ │ ├── requirements.txt
│ │ │ └── resource.ts
│ │ └── store-top-10-posts/
│ │ ├── handler.ts
│ │ └── resource.ts
│ ├── storage/
│ │ ├── photos/
│ │ │ ├── resource.ts
│ │ │ └── trigger.ts
│ │ └── reports/
│ │ └── resource.ts
│ ├── backend.ts
│ └── package.json
├── node_modules/
├── .gitignore
├── package-lock.json
├── package.json
└── tsconfig.json
```

**Describe the solution you'd like**
Sample repos where lambda functions are configured using different runtimes (mainly Python, C and Java). Additionally, adding a sub-section in "functions" to document configuring different runtime lambda functions.

**Describe alternatives you've considered**
N/A

**Additional context**
N/A