[ADF-1586] Added files for core services (#2529)

* [ADF-1586] Added files for core services

* [ADF-1586] Fixed syntax error in example

docs/text-highlight.pipe.md

@@ -0,0 +1,26 @@
+# Text Highlight pipe
+
+Adds highlighting to words or sections of text that match a search string.
+
+## Basic Usage
+
+```HTML
+<div>
+    Some rude words have been detected in your summary: {{ summary | highlight:rudeWordList }}
+</div>
+```
+
+## Details
+
+The pipe's parameter is a string to search for in the text. Any occurrences of the string will
+be highlighted with added HTML (see the
+[Highlight Transform service](highlight-transform.service.md) for more information about how
+this is implemented). The parameter can contain spaces, in which case each separate "word" in the string will be highlighted individually.
+
+<!-- Don't edit the See also section. Edit seeAlsoGraph.json and run config/generateSeeAlso.js -->
+<!-- seealso start -->
+## See also
+
+- [Highlight directive](highlight.directive.md)
+- [Highlight transform service](highlight-transform.service.md)
+<!-- seealso end -->