docs: 🏗️ LPR2 creation as own diagram (#151)

There were too many things going on with this so I split out it. This is
based on the changes @Aastedet did in #133

vignettes/images/create-lpr2.puml

@@ -0,0 +1,32 @@
+@startuml create-lpr2
+!theme cerulean-outline
+<style>
+action, card, database, rectangle {
+    FontColor black
+}
+</style>
+
+together {
+    database lpr_diag
+    database lpr_adm
+}
+
+action "keep_needed_diagnosis_code()" as code
+action "keep_needed_diagnosis_type()" as type
+action "join_lpr2()" as join
+action "get_department()" as gd
+action "get_t1d()" as t1d
+action "get_t2d()" as t2d
+action "get_primary_diagnosis()" as gpd
+
+lpr_diag --> code 
+code --> type
+type --> join
+lpr_adm --> join
+join --> gd
+gd --> t1d
+t1d --> t2d
+t2d --> gpd
+}
+
+@enduml

vignettes/images/function-flow-population.puml

@@ -28,7 +28,7 @@ hide <<exclusion>> stereotype
         database bef
     }
     together {
-            action "join_lpr2()" as lpr2
+            action "create_lpr2()" as lpr2
             action "join_lpr3()" as lpr3
     }