Add poetry for dependency management.

Update python version.
Using virtual environment in vscode.

pyproject.toml

@@ -0,0 +1,22 @@
+[tool.poetry]
+name = "dakiny-bot"
+version = "0.1.0"
+description = "Dakiny's Discord Bot."
+authors = ["imcompiling <[email protected]>"]
+readme = "README.md"
+
+[tool.poetry.dependencies]
+python = "^3.11"
+gitpython = "3.1.43"
+fastapi = "0.111.0"
+hydra-core = "1.3.2"
+nextcord = "2.4.2"
+pandas = "1.5.2"
+python-dotenv = "1.0.0"
+pytz = "2022.7.1"
+sqlalchemy = "1.4.46"
+
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"