Add personalizer v1.1-preview.1 swagger for SDK (Azure#14289)

* added swagger and examples for personalizer v1.1 preview

* moved folder

* added new version to readme

* prettier changes

* fixed breaking changes

* removed custom words

* changed endpoint name

* prettier

* custom word

* custom words

Co-authored-by: orenmichaely <35842001+orenmichaely@users.noreply.github.com>

Author: ormichae

custom-words.txt

@@ -2192,3 +2192,4 @@ PPSX
 PPTM
 XLSM
 DOCM
+multislot