Docs: Add documentation to properties file

CityDoctorParent/Extensions/CityDoctorGUI/DBSettings.properties

-#Embedded database configuration
-#Mon Jan 19 13:16:58 CET 2026
-#database.attemptFallback=true
-#database.connectionPoolSize=22
-#database.debugMode=false
-#database.directory=\\database\\
-#database.inMemoryMode=false
-#database.name=cd_db
-#database.tempMode=false
+! Embedded database configuration
+! Remove # at the beginning of a parameter line to override the value.
+
+! Directory for the database file. DEFAULT: \\database\\
+# database.directory=\\database\\
+! Name of the database file. DEFAULT: cd_db
+# database.name=cd_db
+
+! Sets a limit for the number of pooled connections to the embedded database. DEFAULT: 10
+! If not overridden CityDoctor will use the number of available CPU cores as limit.
+# database.connectionPoolSize=10
+
+! If temp mode is enabled the database-file will be created in the System's TEMP directory. DEFAULT: false
+# database.tempMode=false
+
+! If in-memory mode is enabled the database will be created in the Systems RAM. DEFAULT: false
+! WARNING: Enabling in-memory mode can lead to out-of-memory errors when loading bigger CityGML files.
+# database.inMemoryMode=false
+
+! If fallback is enabled CityDoctor will attempt to use the in-memory mode if database-file creation fails DEFAULT: true
+# database.attemptFallback=true
+
+! If debug mode is enabled the embedded database will start in automatic mixed mode DEFAULT: false
+! NOTE: Activating this mode will start a local server with random ports. This may trigger a Firewall request, which can be safely denied.
+! NOTE: This server is only accessible locally and automatically rejects any remote connections.
+# database.debugMode=false
+
+
+
+