(feature) New MessagesWillBeConsumed Server Plugin Hook (#23305)

* feature: implemented basic MessageWillBeConsumed hook and applied on GetSinglePost method.

* use hook in get methods

* chore: refactored hook usage and created utils functions to apply hook

* bugfix: single post not updating

* chore: adjusted hook to return post

* chore: reverted some uneeded  changes

* chore: updated hook to accept slice of posts

* bugfix: slice filled with niil values

* chore: MessageWillBeConsumed ranamed to MessagesWillBeConsumed

* Update plugin/hooks.go

Co-authored-by: Jesse Hallam <jesse@thehallams.ca>

* Add feature flag

* Update min version

* update tests to account for feature flag

* fix linting issues

---------

Co-authored-by: Matej Topolovac <>
Co-authored-by: mtopolovac <43346061+mtopolovac@users.noreply.github.com>
Co-authored-by: Jesse Hallam <jesse@thehallams.ca>
Co-authored-by: Kevin Hsieh <kevinh@qrypt.com>
Co-authored-by: Jesse Hallam <jesse.hallam@gmail.com>

server/public/plugin/interface_generator/main.go

@@ -32,6 +32,7 @@ var excludedPluginHooks = []string{
 	"LogWarn",
 	"MessageWillBePosted",
 	"MessageWillBeUpdated",
+	"MessagesWillBeConsumed",
 	"OnActivate",
 	"PluginHTTP",
 	"ServeHTTP",