refactor(backend): ♻️ cleanup HTTP service classes and remove database singleton (#687)

* refactor(backend): ♻️ cleanup duplicate code in http services

* refactor(backend): ♻️ refactor database away from singleton design

removed the database single and instead injected the session into a new Database class that is created during each request life-cycle. Now sessions no longer need to be passed into each method on the database

All tests pass, but there are likely some hidden breaking changes that were not discovered.

* fix venv

* disable venv cache

* fix install script

* bump poetry version

* postgres fixes

* revert install

* fix db initialization for postgres

* add postgres to docker

* refactor(backend): ♻️ cleanup unused and duplicate code in http services

* refactor(backend): remove sessions from arguments

* refactor(backend): ♻️ convert units and ingredients to use http service class

* test(backend): ✅ add unit and food tests

* lint

* update tags

* re-enable cache

* fix missing fraction in db

* fix lint

Co-authored-by: hay-kot <hay-kot@pm.me>

pyproject.toml

@@ -32,7 +32,7 @@ passlib = "^1.7.4"
 lxml = "4.6.2"
 Pillow = "^8.2.0"
 pathvalidate = "^2.4.1"
-apprise = "^0.9.2"
+apprise = "0.9.3"
 recipe-scrapers = "^13.2.7"
 psycopg2-binary = {version = "^2.9.1", optional = true}
 gunicorn = "^20.1.0"