[WEB-3482] refactor: platform components and mobx stores (#6713)

* improvement: platform componenents and mobx stores

* minor improvements

packages/constants/src/issue/index.ts

@@ -1,3 +1,4 @@
 export * from "./common";
 export * from "./filter";
 export * from "./layout";
+export * from "./modal";

packages/constants/src/issue/modal.ts

@@ -0,0 +1,19 @@
+// plane imports
+import { TIssue } from "@plane/types";
+
+export const DEFAULT_WORK_ITEM_FORM_VALUES: Partial<TIssue> = {
+  project_id: "",
+  type_id: null,
+  name: "",
+  description_html: "",
+  estimate_point: null,
+  state_id: "",
+  parent_id: null,
+  priority: "none",
+  assignee_ids: [],
+  label_ids: [],
+  cycle_id: null,
+  module_ids: null,
+  start_date: null,
+  target_date: null,
+};