Add battle announces to channel

Channel ID is configured in fw_zookeeper.yaml.

internal/config/announces.go

@@ -0,0 +1,9 @@
+// Fantasy World Zookeeper Bot
+// Copyright (c) 2018 Vladimir "fat0troll" Hodakov
+
+package config
+
+// Announces is a struct which handles announces configuration
+type Announces struct {
+	ChannelID int64 `yaml:"channel_id"`
+}

internal/config/struct.go

@@ -6,5 +6,6 @@ package config
 // Struct is a main configuration structure that holds all other
 // structs within.
 type Struct struct {
-	Telegram Telegram `yaml:"telegram"`
+	Telegram  Telegram  `yaml:"telegram"`
+	Announces Announces `yaml:"announces"`
 }