chore: switch database engine to sqlite (fixes #9954) (#9965)

Switch the database from LevelDB to SQLite, for greater stability and
simpler code.

Co-authored-by: Tommy van der Vorst <tommy@pixelspark.nl>
Co-authored-by: bt90 <btom1990@googlemail.com>

lib/versioner/trashcan_test.go

@@ -34,7 +34,7 @@ func TestTrashcanArchiveRestoreSwitcharoo(t *testing.T) {
 			FSPath: tmpDir2,
 		},
 	}
-	folderFs := cfg.Filesystem(nil)
+	folderFs := cfg.Filesystem()
 
 	versionsFs := fs.NewFilesystem(fs.FilesystemTypeBasic, tmpDir2)
 
@@ -113,7 +113,7 @@ func TestTrashcanRestoreDeletedFile(t *testing.T) {
 		},
 	}
 
-	folderFs := cfg.Filesystem(nil)
+	folderFs := cfg.Filesystem()
 
 	versionsFs := fs.NewFilesystem(fs.FilesystemTypeBasic, tmpDir2)
 
@@ -209,7 +209,7 @@ func TestTrashcanCleanOut(t *testing.T) {
 		},
 	}
 
-	fs := cfg.Filesystem(nil)
+	fs := cfg.Filesystem()
 
 	v := newTrashcan(cfg)