- Add `I` preset parameter to `G26`, `M106`, `M140`, and `M190`.
- Extend menu items to permit a string interpolation.
- Keep material names in a list and interpolate in menu items.
- Extend material presets to support up to 5 predefined materials.

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

* Better section / function log
* Add do_z_clearance motion function

Co-Authored-By: Julius ter Pelkwijk <mrseeker@users.noreply.github.com>

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Co-authored-by: Fabio Santos <fabiosan@live.com>

Co-authored-by: Scott Lahteine <github@thinkyhead.com>

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>