Added console width resize option, and updated resize icon and to reflect the feature

[EricBatlle]

Following https://github.com/yasirkula/UnityIngameDebugConsole/pull/52 I've done the specified modifications, hope everything is okey this time 👍

[EricBatlle]

Also I've been thinking that would be logical to swap between the two Resize icons depending of the Resize type, so I'll tell you in that comment how would I implement it, so you can tell me if it seems correct or if you would do it differently, to avoid another error-prone PR:

I'll add three new variables on DebugLogManager.cs:

• One reference to Image GO inside DebugLogWindowResize GO (resizeIconImage)
• One reference to the current Resize sprite (verticalResizeIcon)
• One last reference to the new resize sprite (resizeIcon)

And one method calledpublic void SetResizeIcon():

public void SetResizeIcon()
{            
    resizeIconImage.sprite = enableHorizontalResizing ? resizeIcon : verticalResizeIcon;          
}

Finally I'll modify DebugLogManagerEditor.cs to have a private reference to itself: private DebugLogManager manager; That will be assigned in OnInspectorGUI like that: manager = (DebugLogManager)target; to be called on the same method when enableHorizontalResizing PropertyField is set so it will look something like:

public override void OnInspectorGUI()
{
    serializedObject.Update();

    manager = (DebugLogManager)target;
    //...
    EditorGUILayout.PropertyField(enableHorizontalResizing);

    manager.SetResizeIcon();
    //...
}

Tell me what do you think about it and if you like it I'll commit those changes to this same PR.

[yasirkula]

I'd change the resize icon in DebugLogManager's Awake function and also in a new DebugLogManager.OnValidate function as follows:

#if UNITY_EDITOR
private void OnValidate()
{
    if( UnityEditor.EditorApplication.isPlaying )
        resizeIconImage.sprite = enableHorizontalResizing ? resizeIcon : verticalResizeIcon;
}
#endif

This PR looks good. After you update the new variables' tooltip texts, I'm ready to merge it.

[EricBatlle]

@yasirkula Done!