Allow workflow reuse across the FIREWHEEL ecosystem (#21)

This adds the `workflow_call` keyword to the current workflows, enabling
the workflows to be used as [reusable
workflows](https://docs.github.com/en/actions/sharing-automations/reusing-workflows).
This will allow us to essentially import the standard FIREWHEEL
workflows in our model component repositories (see
sandialabs/firewheel_repo_base#1).

.github/workflows/linting.yml

@@ -8,6 +8,8 @@ on:
     branches: [ "*" ]
   pull_request:
     branches: [ "main" ]
+  # Allow reuse across the FIREWHEEL ecosystem
+  workflow_call:
 
 jobs:
   lint:

.github/workflows/python-publish.yml

@@ -11,6 +11,8 @@ name: Upload Python Package
 on:
   release:
     types: [published]
+  # Allow reuse across the FIREWHEEL ecosystem
+  workflow_call:
 
 permissions:
   contents: read