[FEATURE] Detailed stats about player weapon usage and hitgroups (#1)

Reviewed-on: https://git.harting.dev/CSGOWTF/csgowtfd/pulls/1
Co-authored-by: Giovanni Harting <539@idlegandalf.com>
Co-committed-by: Giovanni Harting <539@idlegandalf.com>

ent/hook/hook.go

@@ -47,6 +47,19 @@ func (f StatsFunc) Mutate(ctx context.Context, m ent.Mutation) (ent.Value, error
 	return f(ctx, mv)
 }
 
+// The WeaponStatsFunc type is an adapter to allow the use of ordinary
+// function as WeaponStats mutator.
+type WeaponStatsFunc func(context.Context, *ent.WeaponStatsMutation) (ent.Value, error)
+
+// Mutate calls f(ctx, m).
+func (f WeaponStatsFunc) Mutate(ctx context.Context, m ent.Mutation) (ent.Value, error) {
+	mv, ok := m.(*ent.WeaponStatsMutation)
+	if !ok {
+		return nil, fmt.Errorf("unexpected mutation type %T. expect *ent.WeaponStatsMutation", m)
+	}
+	return f(ctx, mv)
+}
+
 // Condition is a hook condition function.
 type Condition func(context.Context, ent.Mutation) bool