feat: Add Lua language support to TestRepoMapAllLanguages

tests/fixtures/languages/lua/test.lua

@@ -0,0 +1,25 @@
+-- Simple Lua module with a greeting function
+
+-- Person class definition
+local Person = {}
+Person.__index = Person
+
+function Person.new(name)
+    local self = setmetatable({}, Person)
+    self.name = name
+    return self
+end
+
+-- Main greeting function to be detected by ctags
+function greet(person)
+    return "Hello, " .. person.name .. "!"
+end
+
+-- Example usage
+local p = Person.new("World")
+print(greet(p))
+
+return {
+    Person = Person,
+    greet = greet
+}