Profile rework (#4)

* default BBL profile

* voron

* wip

* Voron profile

* Prusa MK3S

* add Prusa mk3s

* fix an issue that print_host value was not retrieved.

* add chamber temperature option for filament

* slightly adjust thumbernail angle

* Revert "slightly adjust thumbernail angle"

This reverts commit 6ad38efb36.

* add `one wall on first layer` option

* save preset for connection

* remove unused options

* set default 3000 accl for MK3S

* tweak profile

* update Voron logo

* UI twwaks

* Readme update

* change abs default nozzle temp

* misc

* tweak profiles

* Update README

src/libslic3r/PerimeterGenerator.cpp

@@ -394,7 +394,10 @@ void PerimeterGenerator::process()
     for (const Surface &surface : this->slices->surfaces) {
         // detect how many perimeters must be generated for this island
         int        loop_number = this->config->wall_loops + surface.extra_perimeters - 1;  // 0-indexed loops
-        //BBS: force the topmost layer to be one wall
+        if (this->layer_id == 0 && this->config->only_one_wall_first_layer)
+            loop_number = 0;
+            
+        // BBS: force the topmost layer to be one wall
         if (loop_number > 0 && this->upper_slices == nullptr)
             loop_number = 0;