Added inverse-counting exercise

inverse-counting/counters.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func upwards() {
+	for i := 0; i < 100; i++ {
+		fmt.Println(i)
+		time.Sleep(time.Millisecond * 75)
+	}
+}
+
+func downwards() {
+	for i := 100; i >= 0; i-- {
+		fmt.Println(i)
+		time.Sleep(time.Millisecond * 75)
+	}
+}

inverse-counting/go.mod

@@ -0,0 +1,3 @@
+module inverse-counting
+
+go 1.22.0

inverse-counting/main.go

@@ -0,0 +1,6 @@
+package main
+
+func main() {
+	go upwards()
+	downwards()
+}