feat: http router, command api

internal/model/rest/command.go

@@ -0,0 +1,26 @@
+package rest
+
+/*
+Full list of requirements must be updated when adding new command:
+
+required_without_all=Vote DeclarePeace DeclareWar
+|      excluded_with=Vote DeclarePeace DeclareWar
+*/
+type Command struct {
+	Race         string               `json:"race"         binding:"required,notblank"`
+	Vote         *CommandVote         `json:"vote"         binding:"required_without_all=DeclarePeace DeclareWar,excluded_with=DeclarePeace DeclareWar"`
+	DeclarePeace *CommandDeclarePeace `json:"declarePeace" binding:"required_without_all=Vote DeclareWar,excluded_with=Vote DeclareWar"`
+	DeclareWar   *CommandDeclareWar   `json:"declareWar"   binding:"required_without_all=Vote DeclarePeace,excluded_with=Vote DeclarePeace"`
+}
+
+type CommandVote struct {
+	Recipient string `json:"recipient" binding:"required,notblank"`
+}
+
+type CommandDeclarePeace struct {
+	Opponent string `json:"recipient" binding:"required,notblank"`
+}
+
+type CommandDeclareWar struct {
+	Opponent string `json:"recipient" binding:"required,notblank"`
+}