add multi file feature

com.minres.scviewer.e4.application/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %Bundle-Name
 Bundle-SymbolicName: com.minres.scviewer.e4.application;singleton:=true
-Bundle-Version: 2.2.0.qualifier
+Bundle-Version: 2.3.0.qualifier
 Bundle-Vendor: %Bundle-Vendor
 Require-Bundle: javax.inject;bundle-version="1.0.0",
   org.eclipse.core.runtime;bundle-version="3.11.1",