feat(MyShares): show information about own share security options (#720)

* Provide security information about owned shares

* Add visitor count display for shares with max views

* Add password protection indicator to shares table

* Remove validation from MyShareSecurityDTO

* center lock icon and add spacing

* refactor: run formatter

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Co-authored-by: Elias Schneider <login@eliasschneider.com>

backend/src/share/dto/myShareSecurity.dto.ts

@@ -0,0 +1,9 @@
+import { Expose } from "class-transformer";
+
+export class MyShareSecurityDTO {
+  @Expose()
+  passwordProtected: boolean;
+
+  @Expose()
+  maxViews: number;
+}