Update headers to consistent lowercase format to fix duplicate headers

Add request & response proxy for extractors

Refactor extractors and routes for improved structure

Update uqload.py

Update mixdrop.py

Update doodstream.py

Delete mediaflow_proxy/extractors/__pycache__/uqload.cpython-311.pyc

Delete mediaflow_proxy/extractors/__pycache__/mixdrop.cpython-311.pyc

Delete mediaflow_proxy/extractors/__pycache__/doodstream.cpython-311.pyc

Add files via upload