Adds login ability, error handling, and logging (#1)

Reviewed-on: #1
Co-authored-by: aarbit <aarbit@gmail.com>
Co-committed-by: aarbit <aarbit@gmail.com>

src/main/kotlin/net/halfbinary/scavengerhuntapi/model/converter/LoginConverter.kt

@@ -0,0 +1,8 @@
+package net.halfbinary.scavengerhuntapi.model.converter
+
+import net.halfbinary.scavengerhuntapi.model.domain.Login
+import net.halfbinary.scavengerhuntapi.model.request.LoginRequest
+
+fun LoginRequest.toDomain(): Login {
+    return Login(email, password)
+}