Refactors Citizen into component

Refactor CitizenVoter
Split citizens routes

src/main/kotlin/component/citizen/routes/GetCurrentCitizen.kt

@@ -0,0 +1,28 @@
+package fr.dcproject.component.citizen.routes
+
+import fr.dcproject.citizen
+import fr.dcproject.citizenOrNull
+import fr.dcproject.component.citizen.CitizenVoter
+import fr.dcproject.voter.assert
+import io.ktor.application.*
+import io.ktor.http.*
+import io.ktor.locations.*
+import io.ktor.response.*
+import io.ktor.routing.*
+
+@KtorExperimentalLocationsAPI
+@Location("/citizens/current")
+class CurrentCitizenRequest
+
+@KtorExperimentalLocationsAPI
+fun Route.getCurrentCitizen(voter: CitizenVoter) {
+    get<CurrentCitizenRequest> {
+        val currentUser = citizenOrNull
+        if (currentUser === null) {
+            call.respond(HttpStatusCode.Unauthorized)
+        } else {
+            voter.assert { canView(currentUser, citizenOrNull) }
+            call.respond(citizen)
+        }
+    }
+}