feat: backend fetch api and get response from cloudwatch, prepare files for docker

[nanyi-deng]

Linked issue/ticket

Description

Sets up the basic back server routing and connects with AWS cloudwatch sdk.

Reproduction steps

1. npm start
2. if there is not error. Enter postman chooses 'GET' with this link (http://localhost:3000/api/cloudtrail/events).

Checklist

• [x ] I've followed the Contributing guidelines
• [x ] I've titled my PR according to the Conventional Commits spec
• I've added tests that fail without this PR but pass with it
• I've linted, tested, and commented my code
• I've updated documentation (if appropriate)

[socket-security]

New dependencies detected. Learn more about Socket for GitHub ↗︎

Package	New capabilities	Transitives	Size	Publisher
npm/aws-sdk@2.1691.0	environment, filesystem, network, shell Transitive: eval	+36	103 MB	aws-sdk-bot
npm/dotenv@16.4.5	environment, filesystem	0	79.1 kB	motdotla
npm/express@4.16.4	environment, filesystem, network Transitive: eval	+47	1.59 MB	dougwilson
npm/nodemon@3.1.7	environment, filesystem, shell Transitive: network	+29	1.02 MB	remy

View full report↗︎

[aidanprior]

Uses .env for AWS sdk, so to reproduce, you will need to create a server/.env file and include the AWS_ACCESS_KEY and AWS_SECRET_ACCESS_KEY environment variables.