Internal Release v0.1.1

- implement `Prompt`
- adjust Tool approach
- update readme for tool calling
- document usage of `Prompt`

Rakefile

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require "bundler/gem_tasks"
+require "rake/testtask"
+
+Rake::TestTask.new(:test) do |t|
+  t.ruby_opts = ["-W0", "-W:deprecated"]
+  t.libs << "test"
+  t.libs << "lib"
+  t.test_files = FileList["test/**/*_test.rb"]
+end
+
+require "rubocop/rake_task"
+
+RuboCop::RakeTask.new
+
+task default: [:test, :rubocop]