Add maintainer alex-semenyuk

Signed-off-by: alexey semenyuk <[email protected]>

MAINTAINERS.md

@@ -5,6 +5,7 @@ The following is the list of current maintainers this repo:
 | Name               | GitHub         | Email                               | LFID   |
 | ------------------ | -------------- | ----------------------------------- | ------ |
 | Dzianis Andreyenka | denisandreenko | [email protected] | Darus  |
+| Alexey Semenyuk    | alex-semenyuk  | [email protected] | asemia |
 | Nicko Guyer        | nguyer         | [email protected]              | nguyer |
 
 This list is to be kept up to date as maintainers are added or removed.