Add "Begin Deconstruction" verb, unfinished particle accelerator bits will tell you how to finish them (#2706)

* More Construction Pieces: Default construction targets

* More Construction Pieces: Unfinished particle accelerator will tell you how to finish it

* More Construction Pieces: Construction system actually pathfinds any-to-any

* More Construction Pieces: Verb to begin deconstruction of an object

Resources/Prototypes/Entities/Constructible/Power/particleAccelerator.yml

@@ -250,6 +250,7 @@
     - type: Construction
       graph: particleAcceleratorControlBox
       node: start
+      defaultTarget: completed
 
 - type: entity
   parent: ParticleAcceleratorBase
@@ -266,6 +267,7 @@
     - type: Construction
       graph: particleAcceleratorEmitterLeft
       node: start
+      defaultTarget: completed
 
 - type: entity
   parent: ParticleAcceleratorBase
@@ -282,6 +284,7 @@
     - type: Construction
       graph: particleAcceleratorEmitterCenter
       node: start
+      defaultTarget: completed
 
 - type: entity
   parent: ParticleAcceleratorBase
@@ -298,6 +301,7 @@
     - type: Construction
       graph: particleAcceleratorEmitterRight
       node: start
+      defaultTarget: completed
 
 - type: entity
   parent: ParticleAcceleratorBase
@@ -314,6 +318,7 @@
     - type: Construction
       graph: particleAcceleratorEndCap
       node: start
+      defaultTarget: completed
 
 - type: entity
   parent: ParticleAcceleratorBase
@@ -330,6 +335,7 @@
     - type: Construction
       graph: particleAcceleratorFuelChamber
       node: start
+      defaultTarget: completed
 
 - type: entity
   parent: ParticleAcceleratorBase
@@ -346,3 +352,5 @@
     - type: Construction
       graph: particleAcceleratorPowerBox
       node: start
+      defaultTarget: completed
+