Updated the CODEOWNERS and MAINTAINERS files (#93)

Addressing notaryproject/.github#55
notaryproject/.github#56 and
notaryproject/.github#57

Signed-off-by: Toddy Mladenov <toddysm@gmail.com>

Author: toddysm

CODEOWNERS

@@ -1,3 +1,3 @@
 # Repo-Level Owners (in alphabetical order)
 # Note: This is only for the notaryproject/roadmap repo
-* @FeynmanZhou @justincormack @iamsamirzon @niazfk @priteshbandi @stevelasker @toddysm @vaninrao10 @yizha1
+* @FeynmanZhou @justincormack @iamsamirzon @niazfk @priteshbandi @shizhMSFT @stevelasker @toddysm @vaninrao10 @yizha1

MAINTAINERS

@@ -2,13 +2,14 @@
 # Pattern: [First Name] [Last Name] <[Email Address]> ([GitHub Handle])
 Justin Cormack <justin.cormack@docker.com> (@justincormack)
 Niaz Khan <niazfk@amazon.com> (@niazfk)
+Pritesh Bandi <priteshbandi@gmail.com> (@priteshbandi)
+Shiwei Zhang <shizh@microsoft.com> (@shizhMSFT)
 Steve Lasker <StevenLasker@hotmail.com> (@stevelasker)
+Toddy Mladenov <toddysm@gmail.com> (@toddysm)
 
 # Repo-Level Maintainers (in alphabetical order)
 # Note: This is for the notaryproject/roadmap repo
 Feynman Zhou <feynmanzhou@microsoft.com> (@FeynmanZhou)
-Pritesh Bandi <priteshbandi@gmail.com> (@priteshbandi)
 Samir Kakkar <iamsamir@amazon.com> (@iamsamirzon)
-Toddy Mladenov <toddysm@gmail.com> (@toddysm)
 Vani Rao <vaninrao@amazon.com> (@vaninrao10)
 Yi Zha <yizha1@microsoft.com> @yizha1