Add hud_jumpspeed_height and hud_speedometer_height cvars

[yhoiluhi]

Since previous update changed default speedometer position there are some players (including me) who want to get it back and being able to move it whatever you want in general

[YaLTeR]

Could you show me an example how you want to position them? Why the currently available positions are not sufficient?

[yhoiluhi]

Like the way it was before: or some position between to not look far down and when speedometer doesn't block visibility:

[YaLTeR]

Thanks