codeowners: Add mesh module

Adds an entry for include/bluetooth/mesh and subsys/bluetooth/mesh,
assigning @trond-snekvik and @joerchan.

Signed-off-by: Trond Einar Snekvik <[email protected]>

Author: trond-snekvik

CODEOWNERS

@@ -32,6 +32,7 @@
 /include/debug/ppi_trace.h                @nordic-krch
 /include/                                 @anangl @rlubos @pizi-nordic
 /include/bluetooth/                       @joerchan
+/include/bluetooth/mesh/                  @trond-snekvik @joerchan
 /include/drivers/                         @anangl
 /include/net/                             @rlubos
 /include/nfc/                             @anangl @grochu
@@ -58,6 +59,7 @@ subsys/debug/CMakeLists.txt               @nordic-krch
 /scripts/                                 @mbolivar @tejlmand
 /scripts/hid_configurator/                @pdunaj
 /subsys/bluetooth/                        @joerchan @carlescufi
+/subsys/bluetooth/mesh/                   @trond-snekvik @joerchan
 /subsys/bootloader/                       @hakonfam @ioannisg
 /subsys/dfu/                              @hakonfam @sigvartmh
 /subsys/enhanced_shockburst/              @Raane @lemrey