Add codespell support (config, workflow to detect/not fix) and make it fix some typos

.github/workflows/codespell.yml

@@ -0,0 +1,25 @@
+# Codespell configuration is within setup.cfg
+---
+name: Codespell
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+permissions:
+  contents: read
+
+jobs:
+  codespell:
+    name: Check for spelling errors
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Annotate locations with typos
+        uses: codespell-project/codespell-problem-matcher@v1
+      - name: Codespell
+        uses: codespell-project/actions-codespell@v2

README.md

@@ -32,7 +32,7 @@ Phy provides two GUIs:
 
 ## Hardware requirements
 
-It is recommanded to store the data on a SSD for performance reasons.
+It is recommended to store the data on a SSD for performance reasons.
 
 There are no specific GPU requirements as long as relatively recent graphics and OpenGL drivers are installed on the system.