Adding @jainankitk as a Maintainer (#15304)

* Refactor remote writeable entity and store to make it more reusable

Signed-off-by: Bukhtawar Khan <bukhtawa@amazon.com>

* Java doc

Signed-off-by: Bukhtawar Khan <bukhtawa@amazon.com>

* Adding @jainankitk as a Maintainer

Signed-off-by: Bukhtawar Khan <bukhtawa@amazon.com>

* Re-ordering changes

Signed-off-by: Bukhtawar Khan <bukhtawa@amazon.com>

---------

Signed-off-by: Bukhtawar Khan <bukhtawa@amazon.com>

.github/CODEOWNERS

@@ -11,7 +11,7 @@
 #   3. Use the command palette to run the CODEOWNERS: Show owners of current file command, which will display all code owners for the current file.
 
 # Default ownership for all repo files
-* @anasalkouz @andrross @ashking94 @Bukhtawar @CEHENKLE @dblock @dbwiddis @gbbafna @kotwanikunal @linuxpi @mch2 @msfroh @nknize @owaiskazi19  @reta @Rishikesh1159 @sachinpkale @saratvemulapalli @shwetathareja @sohami @VachaShah
+* @anasalkouz @andrross @ashking94 @Bukhtawar @CEHENKLE @dblock @dbwiddis @gbbafna @jainankitk @kotwanikunal @linuxpi @mch2 @msfroh @nknize @owaiskazi19  @reta @Rishikesh1159 @sachinpkale @saratvemulapalli @shwetathareja @sohami @VachaShah
 
 /modules/lang-painless/ @anasalkouz @andrross @ashking94 @Bukhtawar @CEHENKLE @dblock @dbwiddis @gbbafna @jed326 @kotwanikunal @mch2 @msfroh @nknize @owaiskazi19 @reta @Rishikesh1159 @sachinpkale @saratvemulapalli @shwetathareja @sohami @VachaShah
 /modules/parent-join/ @anasalkouz @andrross @ashking94 @Bukhtawar @CEHENKLE @dblock @dbwiddis @gbbafna @jed326 @kotwanikunal @mch2 @msfroh @nknize @owaiskazi19 @reta @Rishikesh1159 @sachinpkale @saratvemulapalli @shwetathareja @sohami @VachaShah

MAINTAINERS.md

@@ -9,6 +9,7 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 | Anas Alkouz              | [anasalkouz](https://github.com/anasalkouz)             | Amazon      |
 | Andrew Ross              | [andrross](https://github.com/andrross)                 | Amazon      |
 | Andriy Redko             | [reta](https://github.com/reta)                         | Aiven       |
+| Ankit Jain               | [jainankitk](https://github.com/jainankitk)             | Amazon      |
 | Ashish Singh             | [ashking94](https://github.com/ashking94)               | Amazon      |
 | Bukhtawar Khan           | [Bukhtawar](https://github.com/Bukhtawar)               | Amazon      |
 | Charlotte Henkle         | [CEHENKLE](https://github.com/CEHENKLE)                 | Amazon      |