Use configuration file to configure spell checker tool

Support for a configuration file was added in the 2.0.0 release of the codespell tool used for spell check in this
repository. Use of this file allows consolidating all the configuration options in a single place, rather than having
some in `etc/codespell-ignore-words-list.txt` and the others in the taskfile.

Author: per1234

.codespellrc

@@ -0,0 +1,9 @@
+# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/spell-check/.codespellrc
+# See: https://github.com/codespell-project/codespell#using-a-config-file
+[codespell]
+# In the event of a false positive, add the problematic word, in all lowercase, to a comma-separated list here:
+ignore-words-list = ot,propert
+builtin = clear,informal,en-GB_to_en-US
+check-filenames =
+check-hidden =
+skip = ./.git,./go.mod,./go.sum,./package-lock.json,./poetry.lock,./yarn.lock,./arduino-lint,./arduino-lint.exe,./internal/rule/rulefunction/testdata/libraries/MisspelledSentenceParagraphValue/library.properties,./site

Taskfile.yml

@@ -34,9 +34,6 @@ vars:
 
   PRETTIER: prettier@2.1.2
 
-  CODESPELL_SKIP_OPTION: '--skip "./.git,go.mod,go.sum,./arduino-lint,./arduino-lint.exe,./internal/rule/rulefunction/testdata/libraries/MisspelledSentenceParagraphValue/library.properties,./site"'
-  CODESPELL_IGNORE_WORDS_OPTION: "--ignore-words ./etc/codespell-ignore-words-list.txt"
-
 tasks:
   build:
     desc: Build the project
@@ -409,10 +406,10 @@ tasks:
     desc: Check for commonly misspelled words
     cmds:
       - poetry install --no-root
-      - poetry run codespell {{.CODESPELL_SKIP_OPTION}} {{.CODESPELL_IGNORE_WORDS_OPTION}}
+      - poetry run codespell
 
   correct-spelling:
     desc: Correct commonly misspelled words where possible
     cmds:
       - poetry install --no-root
-      - poetry run codespell --write-changes {{.CODESPELL_SKIP_OPTION}} {{.CODESPELL_IGNORE_WORDS_OPTION}}
+      - poetry run codespell --write-changes