[ADF-1549] Added doc files for Processlist library (#2353)

docs/process-attachment-list.component.md

@@ -0,0 +1,39 @@
+# Process Attachment List component
+
+Displays attached documents on a specified process instance
+
+<!-- markdown-toc start - Don't edit this section.  npm run toc to generate it-->
+
+<!-- toc -->
+
+- [Basic Usage](#basic-usage)
+  * [Properties](#properties)
+  * [Events](#events)
+
+<!-- tocstop -->
+
+<!-- markdown-toc end -->
+
+## Basic Usage
+
+```html
+<adf-process-attachment-list
+    [processInstanceId]="YOUR_PROCESS_INSTANCE_ID"
+    (attachmentClick)="YOUR_ATTACHMENT_CLICK_EMITTER_HANDLER">
+</adf-process-attachment-list>
+```
+
+### Properties
+
+| Name | Type | Description |
+| --- | --- | -- |
+| processInstanceId | string | (**required**): The ID of the process instance to display |
+| disabled | boolean | false | Disable/Enable read only mode for attachement list |
+
+### Events
+
+| Name | Description |
+| --- | --- |
+| attachmentClick | Raised when the attachment double clicked or selected view option from context menu by the user from within the component and return a Blob obj of the object clicker|
+| success | Raised when the attachment list fetch all the attach and return a list of attachments |
+| error | Raised when the attachment list is not able to fetch the attachments for example network error   |