db driver registration

src/db/db.cr

@@ -0,0 +1,16 @@
+module DB
+  def self.driver_class(name) # : Driver.class
+    @@drivers.not_nil![name]
+  end
+
+  def self.register_driver(name, klass : Driver.class)
+    @@drivers ||= {} of String => Driver.class
+    @@drivers.not_nil![name] = klass
+  end
+
+  def self.driver(name, options)
+    driver_class(name).new(options)
+  end
+end
+
+require "./driver"

src/db/driver.cr

@@ -0,0 +1,8 @@
+module DB
+  abstract class Driver
+    getter options
+
+    def initialize(@options)
+    end
+  end
+end