feat: add profiled DualSense PCM haptics experiment

tests/haptics_experiment_native_stubs/uni.h

@@ -0,0 +1,47 @@
+#pragma once
+
+#include <btstack.h>
+
+struct uni_hid_device_s;
+typedef struct uni_hid_device_s uni_hid_device_t;
+
+struct uni_report_parser_t {
+    void (*play_dual_rumble)(uni_hid_device_t*, uint16_t, uint16_t,
+                             uint8_t, uint8_t) = nullptr;
+};
+
+enum uni_bt_conn_protocol_t {
+    UNI_BT_CONN_PROTOCOL_NONE,
+    UNI_BT_CONN_PROTOCOL_BR_EDR,
+    UNI_BT_CONN_PROTOCOL_BLE,
+};
+
+struct uni_bt_conn_t {
+    uint16_t handle = 0;
+    uint16_t control_cid = 0;
+    uint16_t interrupt_cid = 0;
+    bool connected = false;
+    uni_bt_conn_protocol_t protocol = UNI_BT_CONN_PROTOCOL_NONE;
+};
+
+struct uni_circular_buffer_t {
+    unsigned queued = 0;
+};
+uint8_t uni_circular_buffer_is_empty(const uni_circular_buffer_t* buffer);
+
+struct uni_hid_device_s {
+    uint16_t vendor_id = 0;
+    uint16_t product_id = 0;
+    uni_report_parser_t report_parser;
+    uni_bt_conn_t conn;
+    uni_circular_buffer_t outgoing_buffer;
+
+    // Fake parser/link state. The module only sees the real fields above.
+    uint16_t remote_mtu = 143;
+    gap_connection_type_t connection_type = GAP_CONNECTION_ACL;
+    bool parser_rumble_active = false;
+    bool parser_rumble_delayed = false;
+    btstack_timer_source_t parser_timer;
+    bool notification_pending = false;
+    bool credit = true;
+};