Fix Security issues and Upgrade Confluent 7.2.0

This releases inclused the following:

• Upgrade to confluent 7.2.0
• Fixes the protobuf version security issues

Connector Use Cases

In this release additional connector use cases have been added to the repo.
The readme has been brought up to date

Influxdb and version flexibility

The following changes were introduced in this release:

• Support for influxdb
• Adding mysql to the docker compose
• Adding license
• Possibility to configure versions and dockerhub repos through .env file

Python kafka producer with additional tech

The following release introduces a working kafka protobuf producer, in python, that registers the schema and stores the data to several topics.
The following technologies are being used:

• kafka confluent standalone - 6.1.0
• ElasticSearch - 7.12.0
• Kibana - 7.12.0
• Postgress - 11

A kafka connect configuration has been added that reads the data from 1 of the topics and pushes it into ELK.