Add alerting for CTFE V2.

ct/go/ctfe/task_types/task_types.go

Index: ct/go/ctfe/task_types/task_types.go
diff --git a/ct/go/ctfe/task_types/task_types.go b/ct/go/ctfe/task_types/task_types.go
new file mode 100644
index 0000000000000000000000000000000000000000..6d3465b8d5f9b816b7029496e9f4bac892859dff
--- /dev/null
+++ b/ct/go/ctfe/task_types/task_types.go
@@ -0,0 +1,26 @@
+/*
+	List of all task types.
+*/
+
+package task_types
+
+import (
+	"go.skia.org/infra/ct/go/ctfe/admin_tasks"
+	"go.skia.org/infra/ct/go/ctfe/capture_skps"
+	"go.skia.org/infra/ct/go/ctfe/chromium_builds"
+	"go.skia.org/infra/ct/go/ctfe/chromium_perf"
+	"go.skia.org/infra/ct/go/ctfe/lua_scripts"
+	"go.skia.org/infra/ct/go/ctfe/task_common"
+)
+
+// Slice of all tasks supported by CTFE.
+func Prototypes() []task_common.Task {
+	return []task_common.Task{
+		&chromium_perf.DBTask{},
+		&capture_skps.DBTask{},
+		&lua_scripts.DBTask{},
+		&chromium_builds.DBTask{},
+		&admin_tasks.RecreatePageSetsDBTask{},
+		&admin_tasks.RecreateWebpageArchivesDBTask{},
+	}
+}