ci: Switch from asdf to mise

- Update .tool-versions python runtime, add uv, remove poetry and nodejs
- Update readme for mise usage

Closes #776

.tool-versions

@@ -1,3 +1,2 @@
-python 3.11.6
-poetry 1.7.1
-nodejs 21.4.0
+python 3.11.13
+uv     0.8.8

README.md

@@ -402,27 +402,24 @@ To reduce some of the non-essential tooling, it's been removed from the repo, bu
 
 ### Additional tooling
 
-<!-- TODO: swap with mise -->
-#### asdf
+#### mise
 
-* Install [asdf](https://asdf-vm.com/guide/getting-started.html#_2-download-asdf)
-* Add plugins
-    ```bash
-    asdf plugin-add python
-    asdf plugin add nodejs https://github.com/asdf-vm/asdf-nodejs.git
-    ```
+* Install [mise](https://mise.jdx.dev/getting-started.html)
+  * `curl https://mise.run | sh`
 * Usage
-  * Install local plugins in repo
+
 ```bash
-    asdf install
-    ```
-  * Install specific plugins
-    ```bash
-    # install stable python
-    asdf install python <latest|3.11.4>
+# Install tools from repo
+mise install
+
+# List tools
+mise list uv
+
+# Install specific plugins
+mise use uv 0.8.8
 
 # set stable to system python
-    asdf global python latest
+mise use -g python
 ```
 
 #### uv