feat(automation): suggest follow-up checks after treatments and feedings

Two new rules, "Kontrolle nach Behandlung" and "Kontrolle nach
Fütterung", create a check task when a treatment or feeding is recorded.
The due date counts from the measure itself (end of treatment, else its
date; feeding date) plus the configured number of days, and the task
names the product and date. At most one open check per colony and rule.

Both rules ship switched off and without an interval: the right timing
depends on the product (package leaflet) and season, so the beekeeper
sets it. Every task-creating rule can now carry a "due after N days"
setting in the automation page.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

ApiCore-Backend/src/treatments/treatments.module.ts

@@ -1,9 +1,11 @@
 import { Module } from '@nestjs/common';
+import { AutomationModule } from '../automation/automation.module';
 import { TreatmentsController } from './treatments.controller';
 import { ColonyTreatmentsController } from './colony-treatments.controller';
 import { TreatmentsService } from './treatments.service';
 
 @Module({
+  imports: [AutomationModule],
   controllers: [TreatmentsController, ColonyTreatmentsController],
   providers: [TreatmentsService],
   exports: [TreatmentsService],