Fix bug no branches for new table

foundations/Database.cpp

@@ -323,6 +323,9 @@ Database::Database() :
 Table & Database::createTable(const std::string & name) {
     auto [it, ok] = _tables.emplace(name, std::make_unique<Table>(*this));
     assert(ok);
+    for (int i=0; i<_branches.size(); i++) {
+        it->second->createBranch(invalid_branch_id);
+    }
     return *it->second;
 }