Add js sdk changes

With type declarations and various missing parts added by Willy-JL

applications/system/js_app/packages/fz-sdk/vgm/index.d.ts

@@ -0,0 +1,32 @@
+/**
+ * Module for interactive with Flipper Video Game Module (VGM)
+ * @version Available with JS feature `vgm`
+ * @module
+ */
+
+/**
+ * @brief Get current VGM pitch, or undefined if VGM not present
+ */
+export declare function getPitch(): number | undefined;
+
+/**
+ * @brief Get current VGM roll, or undefined if VGM not present
+ */
+export declare function getRoll(): number | undefined;
+
+/**
+ * @brief Get current VGM yaw, or undefined if VGM not present
+ */
+export declare function getYaw(): number | undefined;
+
+/**
+ * @brief Wait until yaw changed by specified amount
+ * 
+ * Returns how much the yaw changed from initial value if it exceeded the
+ * specified yaw angle, or returns 0 if it was not exceeded within the timeout
+ * Or returns undefined if VGM is not present
+ * 
+ * @param angle How much the yaw needs to change
+ * @param timeout Maximum time in milliseconds to wait for specified yaw change, default 3000ms
+ */
+export declare function deltaYaw(angle: number, timeout?: number): number | undefined;