chore: add tests workflow

Gemfile.lock

@@ -5,6 +5,7 @@ GEM
     json (2.13.2)
     language_server-protocol (3.17.0.5)
     lint_roller (1.1.0)
+    minitest (5.25.5)
     parallel (1.27.0)
     parser (3.3.9.0)
       ast (~> 2.4.1)
@@ -12,6 +13,7 @@ GEM
     prism (1.4.0)
     racc (1.8.1)
     rainbow (3.1.1)
+    rake (13.3.0)
     regexp_parser (2.11.2)
     rubocop (1.80.1)
       json (~> 2.3)
@@ -37,6 +39,8 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
+  minitest (~> 5.25)
+  rake (~> 13.3)
   rubocop
 
 BUNDLED WITH