[MM-64686] Expose audit logging functionality via plugin API (#31204)

This commit exposes audit logging functionality to plugins via the plugin API, allowing plugins to create and log audit records. Additionally, it addresses a gob encoding issue that could cause plugin crashes when audit data contains nil pointers or unregistered types.

server/channels/api4/job.go

@@ -15,7 +15,6 @@ import (
 
 	"github.com/mattermost/mattermost/server/public/model"
 	"github.com/mattermost/mattermost/server/public/shared/mlog"
-	"github.com/mattermost/mattermost/server/v8/channels/audit"
 	"github.com/mattermost/mattermost/server/v8/platform/shared/web"
 )
 
@@ -149,9 +148,9 @@ func createJob(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	auditRec := c.MakeAuditRecord("createJob", audit.Fail)
+	auditRec := c.MakeAuditRecord("createJob", model.AuditStatusFail)
 	defer c.LogAuditRec(auditRec)
-	audit.AddEventParameterAuditable(auditRec, "job", &job)
+	model.AddEventParameterAuditableToAuditRec(auditRec, "job", &job)
 
 	hasPermission, permissionRequired := c.App.SessionHasPermissionToCreateJob(*c.AppContext.Session(), &job)
 	if permissionRequired == nil {
@@ -291,9 +290,9 @@ func cancelJob(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	auditRec := c.MakeAuditRecord("cancelJob", audit.Fail)
+	auditRec := c.MakeAuditRecord("cancelJob", model.AuditStatusFail)
 	defer c.LogAuditRec(auditRec)
-	audit.AddEventParameter(auditRec, "job_id", c.Params.JobId)
+	model.AddEventParameterToAuditRec(auditRec, "job_id", c.Params.JobId)
 
 	job, err := c.App.GetJob(c.AppContext, c.Params.JobId)
 	if err != nil {
@@ -332,9 +331,9 @@ func updateJobStatus(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	auditRec := c.MakeAuditRecord("updateJobStatus", audit.Fail)
+	auditRec := c.MakeAuditRecord("updateJobStatus", model.AuditStatusFail)
 	defer c.LogAuditRec(auditRec)
-	audit.AddEventParameter(auditRec, "job_id", c.Params.JobId)
+	model.AddEventParameterToAuditRec(auditRec, "job_id", c.Params.JobId)
 
 	props := model.StringInterfaceFromJSON(r.Body)
 	status, ok := props["status"].(string)