fix codacy problem

UpdateVVCLinux.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
+sudo apt update && sudo apt upgrade -y
 sudo apt install ffmpeg qt5-default build-essential git -y
-sudo apt update
-git pull
+git pull

UpdateVVCMacOS.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 brew update
 brew upgrade ffmpeg
-git pull
+git pull

vvcbuildfraun/BuildforLinux.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 echo Martin Eesmaa / VVC Compiler (vvenc and vvdec)
 echo We will check packages called: build-essential and cmake
 echo It will check, if the build-essential and cmake packages are installed or not.

vvcbuildfraun/BuildforMacOS.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 echo Martin Eesmaa / VVC Compiler (vvenc and vvdec)
 echo Please make sure your Xcode is installed on your Applications.
 echo.