Swap the order of the CKF algorithm arguments (#1640)

Minor code clean up.

The order of the CKF algorithm arguments has been swapped around to
match the order provided to the factory generator making it slightly
easier to follow the code.

### What kind of change does this PR introduce?
- [ ] Bug fix (issue #__)
- [ ] New feature (issue #__)
- [ ] Documentation update
- [x] Other: __

### Please check if this PR fulfills the following:
- [ ] Tests for the changes have been added
- [ ] Documentation has been added / updated
- [ ] Changes have been communicated to collaborators

### Does this PR introduce breaking changes? What changes might users
need to make to their code?
No
### Does this PR change default behavior?
No

src/algorithms/tracking/CKFTracking.cc

@@ -109,8 +109,8 @@ namespace eicrecon {
         std::vector<ActsExamples::Trajectories*>,
         std::vector<ActsExamples::ConstTrackContainer*>
     >
-    CKFTracking::process(const edm4eic::Measurement2DCollection& meas2Ds,
-                         const edm4eic::TrackParametersCollection &init_trk_params) {
+    CKFTracking::process(const edm4eic::TrackParametersCollection& init_trk_params,
+                         const edm4eic::Measurement2DCollection& meas2Ds) {
 
 
         // create sourcelink and measurement containers

src/algorithms/tracking/CKFTracking.h

@@ -74,8 +74,8 @@ namespace eicrecon {
             std::vector<ActsExamples::Trajectories*>,
             std::vector<ActsExamples::ConstTrackContainer*>
         >
-        process(const edm4eic::Measurement2DCollection& meas2Ds,
-                const edm4eic::TrackParametersCollection &init_trk_params);
+        process(const edm4eic::TrackParametersCollection& init_trk_params,
+                const edm4eic::Measurement2DCollection& meas2Ds);
 
     private:
         std::shared_ptr<spdlog::logger> m_log;

src/global/tracking/CKFTracking_factory.h

@@ -54,8 +54,8 @@ class CKFTracking_factory :
             m_acts_trajectories_output(),
             m_acts_tracks_output()
         ) = m_algo->process(
-            *m_measurements_input(),
-            *m_parameters_input()
+            *m_parameters_input(),
+            *m_measurements_input()
         );
     }
 };