Update appID to be so.libdb.gtkcord4

Related issue: #156

internal/icons/gtkcord4.gresource.xml

@@ -1,10 +1,10 @@
 <?xml version='1.0' encoding='utf-8'?>
 <gresources>
-  <gresource prefix="/xyz/diamondb/gtkcord4/icons/scalable/actions/">
+  <gresource prefix="/so/libdb/gtkcord4/icons/scalable/actions/">
     <file preprocess="xml-stripblanks" alias="logo.svg">hicolor/scalable/apps/logo.svg</file>
     <file preprocess="xml-stripblanks" alias="logo-nightly.svg">hicolor/scalable/apps/logo-nightly.svg</file>
   </gresource>
-  <gresource prefix="/xyz/diamondb/gtkcord4/icons/scalable/actions/">
+  <gresource prefix="/so/libdb/gtkcord4/icons/scalable/actions/">
     <file preprocess="xml-stripblanks" alias="avatar-default-symbolic.svg">scalable/actions/avatar-default-symbolic.svg</file>
     <file preprocess="xml-stripblanks" alias="chat-bubbles-empty-symbolic.svg">scalable/actions/chat-bubbles-empty-symbolic.svg</file>
     <file preprocess="xml-stripblanks" alias="document-edit-symbolic.svg">scalable/actions/document-edit-symbolic.svg</file>
@@ -24,4 +24,4 @@
     <file preprocess="xml-stripblanks" alias="user-offline-symbolic.svg">scalable/actions/user-offline-symbolic.svg</file>
     <file preprocess="xml-stripblanks" alias="user-status-pending-symbolic.svg">scalable/actions/user-status-pending-symbolic.svg</file>
   </gresource>
-</gresources>
+</gresources>

main.go

@@ -44,7 +44,7 @@ var _ = cssutil.WriteCSS(`
 
 func main() {
 	m := manager{}
-	m.app = app.New(context.Background(), "xyz.diamondb.gtkcord4", "gtkcord4")
+	m.app = app.New(context.Background(), "so.libdb.gtkcord4", "gtkcord4")
 	m.app.AddJSONActions(map[string]interface{}{
 		"app.open-channel": m.openChannel,
 		"app.preferences":  func() { prefui.ShowDialog(m.win.Context()) },

nix/base.nix

@@ -20,8 +20,8 @@
 
 	files = {
 		desktop = {
-			name = "xyz.diamondb.gtkcord4.desktop";
-			path = ./xyz.diamondb.gtkcord4.desktop;
+			name = "so.libdb.gtkcord4.desktop";
+			path = ./so.libdb.gtkcord4.desktop;
 		};
 		logo = {
 			name = "gtkcord4.svg";