feat: add .tool-versions and prompt for poetry_version

{{ cookiecutter.project_name_dashed }}/.tool-versions

@@ -0,0 +1,2 @@
+poetry 1.8.5
+python {{ cookiecutter.python_version }}

{{ cookiecutter.project_name_dashed }}/Makefile

@@ -24,6 +24,7 @@ help:
 	@echo "  \033[1m\033[35mdocs\033[0m \033[37m(d)\033[0m: \033[36mGenerate project documentation.\033[0m\n"
 
 	@echo "Environment Management --------------------------------------------------------"
+	@echo "  \033[1m\033[35masdf-install\033[0m \033[37m(asdfi)\033[0m: \033[36mTry to install tools listed in .tool-versions.\033[0m"
 	@echo "  \033[1m\033[35mclean-venv\033[0m \033[37m(cv)\033[0m: \033[36mRemove virtual environment.\033[0m"
 	@echo "  \033[1m\033[35minstall\033[0m \033[37m(i)\033[0m: \033[36mInstall app and dependencies.\033[0m"
 	@echo "  \033[1m\033[35mvenv\033[0m \033[37m(v)\033[0m: \033[36mCreate virtual environment.\033[0m\n"
@@ -39,6 +40,15 @@ help:
 # NOTE: Do not modify the autogenerated targets, unless necessary, write custom
 # targets in the custom section below..
 
+.PHONY: asdf-install
+asdf-install:
+	@echo "\nInstalling ASDF Plugins & Tools +++++++++++++++++++++++++++++++++++++++++++++++\n"
+	@cat .tool-versions | cut -d' ' -f1 | grep "^[^\#]" | xargs -I {} asdf plugin add {}
+	@asdf install
+
+.PHONY: asdfi
+asdfi: asdf-install
+
 .PHONY: clean-venv
 clean-venv:
 	@echo "\nRemoving the virtual environment ++++++++++++++++++++++++++++++++++++++++++++++\n"

{{ cookiecutter.project_name_dashed }}/README.md

@@ -19,6 +19,7 @@
 - [Development](#development)
   - [Makefile](#makefile)
   - [Environment reproducibility](#environment-reproducibility)
+    - [asdf](#asdf)
     - [Dev containers](#dev-containers)
 - [Contributing](#contributing)
 - [Code of Conduct](#code-of-conduct)
@@ -126,6 +127,24 @@ make u
 
 ### Environment reproducibility
 
+Below mentioned are some tools and configuration that you can use to make your
+environment development-ready. This is optional and opinionated but can help you
+set up your environment quickly.
+
+#### asdf
+
+We recommend using [asdf][asdf] to manage your development environment. Take a
+look at the `.tool-versions` file to see the versions of the tools used in this
+project. Additionally, you can use the make command to install all the required
+tools at once.
+
+```sh
+make asdfi
+```
+
+> **Note:** The above command might not install all the tools required, so make
+> sure to install the tools that are not installed manually.
+
 #### Dev Containers
 
 Our project supports [Dev Containers][devcontainers] for an easy and reproducible
@@ -196,6 +215,7 @@ To get in touch with us, please use one of the following routes:
 
 [![logo-elixir]][elixir] [![logo-elixir-cloud-aai]][elixir-cloud-aai]
 
+[asdf]: https://asdf-vm.com/
 [badge-chat-url]: https://join.slack.com/t/elixir-cloud/shared_invite/enQtNzA3NTQ5Mzg2NjQ3LTZjZGI1OGQ5ZTRiOTRkY2ExMGUxNmQyODAxMDdjM2EyZDQ1YWM0ZGFjOTJhNzg5NjE0YmJiZTZhZDVhOWE4MWM
 [badge-license-url]: http://www.apache.org/licenses/LICENSE-2.0
 [code-of-conduct]: https://elixir-cloud-aai.github.io/about/code-of-conduct/