feat: 🎸 AnalyzeSyntax レコードを生成するタスクを作成した

lib/tasks/save_analyze_syntaxes.rake

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+namespace :save_analyze_syntaxes do
+  desc '全ツイートを NaturalLanguage::Analyzer で解析して保存する'
+  task tweets: :environment do
+    client = CloudLanguage.client
+
+    ActiveRecord::Base.transaction do
+      Tweet.all.each do |tweet|
+        NaturalLanguage::Analyzer.save_analyze_syntax_record(client, tweet)
+      end
+    end
+  end
+
+  desc '全DMを NaturalLanguage::Analyzer で解析して保存する'
+  task direct_messages: :environment do
+    client = CloudLanguage.client
+
+    ActiveRecord::Base.transaction do
+      DirectMessage.all.each do |direct_message|
+        NaturalLanguage::Analyzer.save_analyze_syntax_record(client, direct_message)
+      end
+    end
+  end
+end