hooks: added few python3 related fixes to handle bytes vs str on Mercurial hooks

binary envelope: add support for custom response type when using wrapped binary data in envelope

logging: added few usefull log entries

utils: added few typing fixes to str_utils

makefile: added dev-srv command to run the server app

requirements: bumped some libs

package: fix dev-env, bumped some deps to be consistent

project: switched completly to pyproject.toml

ruff: code-cleanups

project: added pyproject.toml file