Feature/audit certificate upload (#30223)

* feat: Add certificate upload option for audit logging settings

* Commit current changes

* Additions

* MM-62944 Fix fileupload settings not being clickable

* Support for uploading a cert for experimental audit logging cert. Pre cloud implementation in the backend

* Forgot to add new hook

* Add support for setting custom audit log certifcates in Cloud

* Permissions

* I18n

* Change order

* Linter fixes

* Linter fixes, add openapi spec

* additions for openapi

* More openapi fixes because it won't run locally

* Undo, cursor went rogue

* newline fix

* Align types properly

* Fix i18n

* Fix i18n AGAIN

* Fix error

* Update api/v4/source/audit_logging.yaml

---------

Co-authored-by: Harrison Healey <harrisonmhealey@gmail.com>
Co-authored-by: Mattermost Build <build@mattermost.com>

server/einterfaces/cloud.go

@@ -4,6 +4,8 @@
 package einterfaces
 
 import (
+	"mime/multipart"
+
 	"github.com/mattermost/mattermost/server/public/model"
 )
 
@@ -37,4 +39,7 @@ type CloudInterface interface {
 	ApplyIPFilters(userID string, ranges *model.AllowedIPRanges) (*model.AllowedIPRanges, error)
 	GetIPFilters(userID string) (*model.AllowedIPRanges, error)
 	GetInstallation(userID string) (*model.Installation, error)
+
+	RemoveAuditLoggingCert(userID string) error
+	CreateAuditLoggingCert(userID string, fileData *multipart.FileHeader) error
 }