adding hidden basic asp.net core backend (#30)

Base functionality:

    DB
    email sending
    user registration & login
    storing new characters and reading them back

Notes:

    Functionality is "hidden" with no links pointing to it.
    Most pages are scaffolded and not reviewed at all :(
    local Dev db setup is pushed to git
    NO local email setup :(

Kemkas.Web/Db/Enums/Kepzettseg.cs

@@ -0,0 +1,34 @@
+namespace Kemkas.Web.Db.Enums;
+
+public enum Kepzettseg
+{
+    Alkimia = 1,
+    Alcazas = 2,
+    Allatidomitas = 3,
+    Csapdak = 4,
+    Csillagjoslas = 5,
+    Egyensulyozas = 6,
+    Eloadas = 7,
+    Ertekbecsles = 8,
+    Gyogyitas = 9,
+    Hajozas = 10,
+    Hallgatozas = 11,
+    Hamisitas = 12,
+    JelekOlvasasa = 13,
+    Koncentracio = 14,
+    Lovaglas = 15,
+    Maszas = 16,
+    Megfigyeles = 17,
+    Meregkeveres = 18,
+    Mesterseg = 19,
+    Nyomkereses = 20,
+    Osonas = 21,
+    Rejtozes = 22,
+    Szabadulomuveszet = 23,
+    Tudas = 24,
+    Ugras = 25,
+    Uszas = 26,
+    Varazslatismeret = 27,
+    Zarnyitas = 28,
+    Zsebmetszes = 29,
+}