Decouple AIP from Conda

[verovaleros]

Description

Fixes #40

This PR implements the decoupling of AIP from Conda. The two major benefits are:

1. Reduction of docker image size from 1.92GB to cca 370MB
2. Remove the need for a separate Dockerfile for Mac M1s

The changes introduced are:

• Switch from Conda to Python virtual environments (with updates to the entrypoint.sh)
• Switch to multi-stage docker builds (removing dockerfile for m1)
• Remove unused files (environment.yml, etc)
• Leave only minimal requirements for production usage of AIP (blocklist generation)

How Has This Been Tested?

The new version of AIP has been tested with Zeek logs over several days with a variety of scenarios

• Generating all files from zero
• Generating files using the previous knowledge files
• Generating blocklists on linux
• Generating blocklists on mac m1

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings

[verovaleros]

The etc/docker/README.md instructions do not need to be updated, steps are the same.