Adds an lcd menu for bed screw adjust for Klipper

bedScrew.cfg

[bed_screws]
screw1: 32,32
screw2: 203,32
screw3: 203,203
screw4: 32,203


[menu __main __leveling]
type: list
enable: {not printer.idle_timeout.state == "Printing"}
name: Leveling

[menu __main __leveling preheatBed]
type: command
name: Hotbed > 60c
gcode:
    M140 S60

[menu __main __leveling bedMesh]
type: command
name: Generate Mesh
gcode: 
    G28
    BED_MESH_CALIBRATE


[menu __main __leveling __BedScrews]
type: list
name: Bed Screws

[menu __main __leveling __BedScrews Home]
type: command
name: Home
gcode:
    G28

[menu __main __leveling __BedScrews Start]
type: command
name: Start
gcode:
    BED_SCREWS_ADJUST

[menu __main __leveling __BedScrews Accept]
type: command
name: Accept
gcode: 
    ACCEPT

[menu __main __leveling __BedScrews Adjust]
type: command
name: Adjust
gcode: 
    ADJUSTED

[menu __main __leveling __BedScrews Abort]
type: command
name: Abort
gcode: 
    ABORT
    G1 Z10