feat: Initial observations endpoint

app/controllers/api/api_controller.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module API
+  class APIController < ApplicationController
+    skip_forgery_protection
+  end
+end

app/controllers/api/v1/weather/observations_controller.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+module API
+  module V1
+    module Weather
+      class ObservationsController < APIController
+        def create
+          Rails.logger.debug 'Create new observation'
+          
+          head :ok
+        end
+      end
+    end
+  end
+end