update spellcheck to use cspell

tools/spellcheck/baseball-words.txt

@@ -0,0 +1,5 @@
+BBCOR
+MLB
+RO
+Rawlings
+rostered

tools/spellcheck/cspell.yml

@@ -0,0 +1,25 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/streetsidesoftware/cspell/main/cspell.schema.json
+
+# The version of the configuration file format.
+version: "0.2"
+# The locale to use when spell checking. (e.g., en, en-GB, de-DE
+language: en-US
+useGitignore: true
+globRoot: "../.."
+allowCompoundWords: true
+
+files:
+  - "**/*.md"
+  - ./README.md
+
+dictionaryDefinitions:
+  - name: baseball-words
+    path: ./baseball-words.txt
+
+dictionaries:
+  - baseball-words
+
+words:
+  - cmba
+  - chicagoland
+  - gitdriver