[FL-3925] JS views finished (#4155)

* js: value destructuring and tests

* js: temporary fix to see size impact

* js_val: reduce code size 1

* i may be stupid.

* test: js_value args

* Revert "js: temporary fix to see size impact"

This reverts commit f51d726dbafc4300d3552020de1c3b8f9ecd3ac1.

* pvs: silence warnings

* style: formatting

* pvs: silence warnings?

* pvs: silence warnings??

* js_value: redesign declaration types for less code

* js: temporary fix to see size impact

* style: formatting

* pvs: fix helpful warnings

* js_value: reduce .rodata size

* pvs: fix helpful warning

* js_value: reduce code size 1

* fix build error

* style: format

* Revert "js: temporary fix to see size impact"

This reverts commit d6a46f01794132e882e03fd273dec24386a4f8ba.

* style: format

* js: move to new arg parser

* style: format

* feat: all js views done

* js, toolbox: generalize string owning

* toolbox: silence pvs warning

---------

Co-authored-by: hedger <hedger@nanode.su>
Co-authored-by: hedger <hedger@users.noreply.github.com>

applications/system/js_app/packages/fz-sdk/gui/popup.d.ts

@@ -0,0 +1,43 @@
+/**
+ * Like a Dialog, but with a built-in timer.
+ * 
+ * <img src="../images/popup.png" width="200" alt="Sample screenshot of the view" />
+ * 
+ * ```js
+ * let eventLoop = require("event_loop");
+ * let gui = require("gui");
+ * let popupView = require("gui/popup");
+ * ```
+ * 
+ * This module depends on the `gui` module, which in turn depends on the
+ * `event_loop` module, so they _must_ be imported in this order. It is also
+ * recommended to conceptualize these modules first before using this one.
+ * 
+ * # Example
+ * For an example refer to the `gui.js` example script.
+ * 
+ * # View props
+ *   - `header`: Text displayed in bold at the top of the screen
+ *   - `text`: Text displayed in the middle of the string
+ *   - `timeout`: Timeout, in milliseconds, after which the event will fire. The
+ *     timer starts counting down when this property is assigned.
+ * 
+ * @version Added in JS SDK 0.1
+ * @module
+ */
+
+import type { View, ViewFactory } from ".";
+import type { Contract } from "../event_loop";
+
+type Props = {
+    header: string,
+    text: string,
+    timeout: number,
+}
+type Child = never;
+declare class Popup extends View<Props, Child> {
+    timeout: Contract;
+}
+declare class PopupFactory extends ViewFactory<Props, Child, Popup> { }
+declare const factory: PopupFactory;
+export = factory;