Add wifi, nvs and inplace_function implementations

components/wifi/include/wifi/wifi.h

@@ -0,0 +1,57 @@
+#pragma once
+
+
+#include <span>
+#include <string_view>
+
+#include <util/inplace_function.h>
+
+
+namespace wifi {
+
+
+enum class Mode { station, soft_ap, /* station_and_soft_ap */ };
+
+
+// TODO: Authmode
+struct soft_ap_settings_t {
+    uint8_t channel         = 11;
+    uint8_t max_connections = 5;
+
+    inplace_function<void(std::array<char, 18>, uint8_t)> connected;
+    inplace_function<void(std::array<char, 18>, uint8_t)> disconnected;
+};
+
+struct station_settings_t {
+    inplace_function<void()>                     stationStarted = [] {};
+    inplace_function<void()>                     disconnected   = [] {};
+    inplace_function<void(std::array<char, 17>)> gotIp = [](auto...) {};
+};
+
+struct scanned_ap_t {
+    std::array<char, 33> ssid = {0};
+    int                  rssi;
+};
+
+
+void init();
+void deinit();
+
+void set_mode(Mode mode);
+
+void configure_soft_ap(std::string_view ssid, std::string_view password,
+                       soft_ap_settings_t settings = {});
+void configure_station(std::string_view ssid, std::string_view password,
+                       station_settings_t settings = {});
+void clear_callbacks();
+
+void station_connect();
+void station_disconnect();
+
+void start();
+void stop();
+
+std::span<scanned_ap_t> scan(std::span<scanned_ap_t> memory);
+
+
+} // namespace wifi