Refactor stored procedure and update project structure

- Modified the stored procedure `fds__admin_getReportCatalog.sql` to use the correct schema for `all_objects`.
- Added new folders and projects for `eRechnungLib` in the solution file `Fuchs_Intranet.slnx`, including validation and test projects.
- Updated submodule reference for `OCORE`.
- Added new submodule `eRechnungLib` with initial commit.

.gitmodules

@@ -10,3 +10,6 @@
 [submodule "OCORE_Charting"]
 	path = OCORE_Charting
 	url = https://git.processweb.de/Stefan/OCORE_Charting.git
+[submodule "eRechnungLib"]
+	path = eRechnungLib
+	url = https://git.processweb.de/ProcessWeb_Tools/eRechnungLib.git