[ADF-1774] Extend "Create Folder" and add "Edit Folder" dialogs to ADF (#2585)

* [ADF-1774] Extend "Create Folder" and add "Edit Folder" dialogs to ADF

- added create and edit folder directives and used them inside the demo-shell file component
- added FolderDialogComponent for edit/create actions with name validators: forbidSpecialCharacters, forbidEndingDot and forbidOnlySpaces
- updated the translation files
- added unit tests for the new components
- removed the CreateFolderDialogComponent and its usage inside demo-shell
- added documentation files for FolderCreateDirective and FolderEditDirective

* [ADF-1774] fix messed up translation files because of previous commit

* [ADF-1774] changes required on code review comments

docs/folder-create.directive.md

@@ -0,0 +1,40 @@
+# Folder Create directive
+
+<!-- markdown-toc start - Don't edit this section.  npm run toc to generate it-->
+
+<!-- toc -->
+
+- [Basic Usage](#basic-usage)
+  * [Properties](#properties)
+  * [Events](#events)
+- [Details](#details)
+
+<!-- tocstop -->
+
+<!-- markdown-toc end -->
+
+## Basic Usage
+
+```html
+<adf-toolbar>
+    <button mat-icon-button
+            [adf-create-folder]="documentList.currentFolderId">
+            <mat-icon>create_new_folder</mat-icon>
+    </button>
+</adf-toolbar>
+
+<adf-document-list #documentList ...>
+ ...
+</adf-document-list>
+```
+
+### Properties
+
+| Name              | Type                | Default   | Description                                                       |
+| ----------------- | ------------------- | --------- | ----------------------------------------------------------------- |
+| adf-create-folder | string              | '-my-'    | Parent folder where the new folder will be located after creation |
+
+## Details
+
+'FolderCreateDirective' directive needs the id of the parent folder where we want the new folder node to be created. If no value is provided, the '-my-' alias is used.
+It opens the FolderDialogComponent to receive data for the new folder. If data is valid, on dialog close, it emits folderCreate event.