Add an option to install Input Shaper dependencies & config

[WSLAB3D]

• install dependencies: pip install -v numpy sudo apt update sudo apt install python-numpy python-matplotlib

• Enable SPI add "dtparam=spi=on" to /boot/config.txt

• Add config to printer.cfg [mcu rpi] serial: /tmp/klipper_host_mcu

[adxl345] cs_pin: rpi:None

[resonance_tester] accel_chip: adxl345 probe_points: 100,100,20 # an example

[jbeima]

Some of this might not be needed.

If you are connecting the ADXL to an SPI port on boards like the Octopus, Octopus Pro, and SKR 1.2 Pro the [adxl345] block is configured for SPI communication.

Also you can't add the [mcu] block for the pi before the linux process is compiled and installed.

This maybe should be an option? Since there is more than one way to configure Input Shapping.

[bjarchi]

Second that auto-installing all the deps for input shaping would be tricky, since how it's configured depends very much on one's specific setup -- e.g. which accel is used, where it's connected (and so whether the Pi MCU is needed), where that probe point is placed to be near the middle of the printer...

I do have a FR open to add install of pi_mcu itself, ideally as a systemd unit instead of via init.d script. In parallel I'm looking into writing a systemd unit for it myself that will sequence correctly with Klipper.service; if I get that working then I'll submit a PR to Klipper.

[DaVinci-10]

IMO..limiting the install for input shaper could simply just install numpy etc (all the dependancies), but end the installer with a message to the user to add to printer.cfg etc, I think would satisfy most people.

[EricZimmerman]

look at doing Shake N Tune as the installer does all that for you, so it would be a simple one liner to install SnT