fix: manual check for dir exists for scan in cli

task: improve tests

fix: create tmp dirs and files for tests

task: add basic tests for cli

task: add chat and scan functionalities to cli

task: add summarize command to cli

task: update README with testing instructions

task: add Optional to writer

task: remove pyc files

task: add tests for rag

task: add tests for batcher

task: update README

task: add batcher funcitonality for optimized summary processing

task: add utils for input management in cli

feat: add writer and rich and cli functionality