add spellcheck github action

.github/workflows/check_spelling.yml

@@ -0,0 +1,24 @@
+name: Spellcheck
+on:
+  push:
+    branches: ["master"]
+  pull_request:
+    paths:
+    - '**.js'
+    - '**.txt'
+    - '**.html'
+    - '**.md'
+jobs:
+  spelling:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Check Spelling
+      uses: rojopolis/spellcheck-github-actions@v0
+      with:
+        output_file: spellcheck-output.txt
+    - uses: actions/upload-artifact@v3
+      if: '!cancelled()' # Do not upload artifact if job was cancelled
+      with:
+        name: Spellcheck Output
+        path: spellcheck-output.txt

.spellcheck.yml

@@ -0,0 +1,21 @@
+matrix:
+- name: Markdown
+  aspell:
+    lang: en
+  dictionary:
+    wordlists:
+    - .wordlist.txt
+    encoding: utf-8
+  pipeline:
+  - pyspelling.filters.markdown:
+      markdown_extensions:
+      - markdown.extensions.extra:
+  - pyspelling.filters.html:
+      comments: false
+      ignores:
+      - code
+      - pre
+  - pyspelling.filters.url:
+  sources:
+  - '**/*.md'
+  default_encoding: utf-8

.wordlist.txt

@@ -0,0 +1,55 @@
+nav
+keymap
+keymaps
+TOC
+RGB
+UI
+keycode
+keycodes
+pre
+incrementing
+Miryoku
+Torx
+OLED
+OG
+QMK
+QMK's
+trackpad
+chamfer
+chamfered
+desolder
+bstkbd
+vias
+FPC
+permalink
+bundler
+BKB
+BastardKB
+pinout
+ATmega
+eg
+ie
+microcontroller
+Adafruit
+Blok
+bootloader
+ESD
+Frood
+GPIO
+Kee
+Keeb
+Liatris
+Picro
+SparkFun
+Vbus
+splitkb
+xB
+xCB
+Splinky
+firmware
+firmwares
+LED
+LEDs
+PCB
+PCBs
+Nano