feat: add default location for database

removes the need to setup mandatory configuration

komga/src/main/resources/application-dev.yml

@@ -8,6 +8,8 @@ komga:
   #  libraries-scan-cron: "*/5 * * * * ?" #every 5 seconds
   libraries-scan-cron: "-" #disable
 spring:
+  datasource:
+    url: jdbc:h2:mem:testdb
   jpa:
     properties:
       hibernate:

komga/src/main/resources/application.yml

@@ -14,6 +14,8 @@ komga:
 spring:
   #  cache:
   #    caffeine-spec: maximumSize=500,expireAfterWrite=300s
+  datasource:
+    url: jdbc:h2:~/.komga/database.h2
   h2:
     console:
       enabled: true