Start implementing match start

app/interactors/start_match.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class StartMatch
+  include Interactor
+
+  def call
+    match = context.match
+    begin
+      match = MatchService.start_match(match)
+      context.object_to_save = match
+    rescue StandardError
+      context.fail!
+    end
+  end
+end

app/services/match_service.rb

@@ -1,6 +1,12 @@
 # frozen_string_literal: true
 
 class MatchService
+  # Starts a Match; setting its state to running
+  #
+  # @param match Match the Match to be started
+  # @return Match the resulting Match
+  def self.start_match(match); end
+
   # Generates all necessary matches from a list of teams
   #
   # @param teams [Array] the teams to generate matches with