Add poetry

Solves #1 (closed) , adds poetry dependency manager and document it in the README

pyproject.toml

+[tool.poetry]
+name = "i-mav"
+version = "0.1.0"
+description = ""
+authors = ["thomasbazeille <bazeille.thomas@gmail.com>"]
+readme = "README.md"
+package-mode = false
+
+[tool.poetry.dependencies]
+python = ">=3.10,<3.12"
+stable-baselines3 = "^2.3.2"
+gymnasium = "^1.0.0"
+scipy = "^1.14.1"
+pyyaml = "^6.0.2"
+
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"