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/repository/HunterRepository.kt

@@ -3,10 +3,18 @@ package net.halfbinary.scavengerhuntapi.repository
 import net.halfbinary.scavengerhuntapi.model.HunterId
 import net.halfbinary.scavengerhuntapi.model.record.HunterRecord
 import org.springframework.data.jpa.repository.JpaRepository
+import org.springframework.data.jpa.repository.Query
 import org.springframework.stereotype.Repository
 
 @Repository
-interface HunterRepository : JpaRepository<HunterRecord, HunterId>
 interface HunterRepository : JpaRepository<HunterRecord, HunterId> {
     fun findByEmail(email: String): HunterRecord?
+
+    @Query("""
+        SELECT h.*
+        FROM hunter h
+        WHERE h.email = :email
+            AND h.password = :password
+    """, nativeQuery = true)
+    fun login(email: String, password: String): HunterRecord?
 }