Fix installing via pipx

Provide a name in the `[project]` section so pipx can use poetry > 2.0
to determine the package name, but then before actually installing, have
it ensure the venv is using poetry < 2.0.

.github/workflows/ci-pipx.yml

@@ -62,7 +62,7 @@ jobs:
           python-version: ${{ inputs.python-version }}
 
       - name: Install with pipx
-        run: pipx install .
+        run: pipx install --preinstall 'poetry>=1.2.0,<2.0' .
 
       - name: Run --help
         run: nava-platform --help

README.md

@@ -17,7 +17,7 @@ Be sure `git` exists on your `$PATH`.
 Then install the tool with:
 
 ```sh
-pipx install git+ssh://[email protected]/navapbc/platform-cli
+pipx install --preinstall 'poetry>=1.2.0,<2.0' git+ssh://[email protected]/navapbc/platform-cli
 ```
 
 You can now run `nava-platform`.

pyproject.toml

@@ -1,4 +1,5 @@
 [project]
+name = "nava-platform-cli"
 requires-python = ">=3.11"
 
 [tool.poetry]