Adding utilities file

Gonna keep reusing these text scanning and screen clearing functions as
much as I can

tools.go

@@ -1,8 +1,11 @@
 package main
 
 import (
+	"bufio"
 	"fmt"
 	"os"
+	"runtime"
+	"strings"
 )
 
 func catchErr(err error) (errHappened bool) {
@@ -14,3 +17,24 @@ func catchErr(err error) (errHappened bool) {
 	}
 	return errHappened
 }
+
+func clear() {
+	fmt.Print("\033[H\033[2J")
+}
+
+func scanLine() (line string) {
+	switch runtime.GOOS {
+	case "linux":
+		in := bufio.NewReader(os.Stdin)
+		lineNew, err := in.ReadString('\n')
+		catchErr(err)
+		line = strings.Trim(lineNew, "\n")
+
+	case "windows":
+		in := bufio.NewReader(os.Stdin)
+		lineNew, err := in.ReadString('\r')
+		catchErr(err)
+		line = strings.Trim(lineNew, "\r")
+	}
+	return line
+}