54 get data from multiple tables postgres (#72)

Create first dash board including header, basic company information and
finance plot

---------

Co-authored-by: Philipp Horstenkamp <philipp@horstenkamp.de>

tests/ui/company_finance_dash_test.py

@@ -0,0 +1,7 @@
+"""Test for the company stats dashboard."""
+from aki_prj23_transparenzregister.ui import company_finance_dash
+
+
+def test_import() -> None:
+    """Checks if an import co company_stats_dash can be made."""
+    assert company_finance_dash is not None