add main project files

cmd/altcha/main.go

@@ -0,0 +1,14 @@
+package main
+
+import (
+	"forge.cadoles.com/cadoles/altcha-server/internal/command"
+)
+
+func main() {
+	command.Main(
+		command.RunCommand(),
+		command.GenerateCommand(),
+		command.SolveCommand(),
+		command.VerifyCommand(),
+	)
+}