[PMT] - Streamlit Authenticator

### Overview

We want to add an authenticator to our streamlit dashboard to prevent public access (kinda). We will add the following module: https://github.com/mkhorasani/Streamlit-Authenticator

### Acceptance Criteria
- [ ] Briefly read through the README of https://github.com/mkhorasani/Streamlit-Authenticator
- [ ] Add the streamlit authenticator dependency to the requirements.txt (do not pip freeze the requirements file, please)
- [ ] Create a yaml config file for the streamlit authenticator
- [ ] Make sure to set autohash to false - we are going to set the password as the hash directly instead of putting the password in plain text (as this would be a pretty bad idea, especially if we are committing it to GitHub)
- [ ] When setting the credentials in the config file, ask samrat for the credentials to use for the email + password
- [ ] Create a hashing script that we can run to get a hash of the password
- [ ] The usage should look something like "python3 hash_password.py "
- [ ] Add the streamlit authenticator to the streamlit app
- [ ] Only once the user has successfully authenticated, make the API calls to get the list of projects (instead of immediately loading in projects like it is right now

### Testing
- Run `docker compose -f docker-compose.yml up`
- Go to `http://localhost:8501` to access the app
- Login with the credentials
- Check whether the API call to get the list of projects happens immediately or after you login (you want the latter to happen)

### Notes
- Ask samrat if you have any questions 🐱 <3

Read the linked Streamlit-Authenticator README, then inspect requirements.txt, docker-compose.yml, and the Streamlit app entry point to understand the current project-list API call. Done means the dependency, YAML configuration, password-hashing script, and authentication flow are integrated, and the API call occurs only after login when tested at localhost:8501.

Written by the indexing model from the issue text.