esp_wifi_remote/esp_hosted bindings. (#404)

Both the esp_wifi_remote and esp_hosted bindings have been added, along
with a fix for a missing ESP_IDF_VERSION set that comes from the
get_idf_version function in idf_tools.py, which is called by idf.py
during build. Since we're not using idf.py directly, we're missing this
environment variable and setting it here fixes this gap for modules that
use it.

Author: mdwn

CHANGELOG.md

@@ -25,6 +25,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add raw bindings for `esp_lcd_mipi_dsi.h` and `esp_ldo_regulator.h` (#398)
 - Pulse counter bindings for esp32p4
 - `impl core::error::Error for EspError`
+- Added bindings for esp_wifi_remote and esp_hosted
 
 ### Fixed
 - Fix the `esp_app_desc!` macro so the reserv3 field is correct for ESP IDF v5.4

resources/cmake_project/CMakeLists.txt

@@ -9,6 +9,14 @@ set(SDKCONFIG_DEFAULTS $ENV{SDKCONFIG_DEFAULTS})
 
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
 
+# Set ESP_IDF_VERSION env var for components that need it (e.g. esp_wifi_remote Kconfig).
+# ESP-IDF's version.cmake only sets IDF_VERSION, not ESP_IDF_VERSION.
+# Use major.minor format to match component Kconfig filenames (e.g. Kconfig.idf_v5.3.in).
+# Looks like this is set in idf_tools.py in esp-idf, but since we're not using esp-idf's,
+# build system directly, and some components expect this env var to be set, we need to set it here. See
+# https://github.com/espressif/esp-wifi-remote/issues/85
+set(ENV{ESP_IDF_VERSION} "${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}")
+
 set(dependencies_lock "${CMAKE_CURRENT_LIST_DIR}/dependencies.lock")
 set(components_lock "$ENV{PROJECT_DIR}/components_${IDF_TARGET}.lock")
 

src/include/esp-idf/bindings.h

@@ -136,6 +136,14 @@
 #endif
 #endif
 
+#ifdef ESP_IDF_COMP_ESP_WIFI_REMOTE_ENABLED
+#include "esp_wifi_remote.h"
+#endif
+
+#ifdef ESP_IDF_COMP_ESP_HOSTED_ENABLED
+#include "esp_hosted.h"
+#endif
+
 #if defined(ESP_IDF_COMP_ESP_COEX_ENABLED) && (ESP_IDF_VERSION_MAJOR > 5 || ESP_IDF_VERSION_MAJOR == 5 && ESP_IDF_VERSION_MINOR >= 1)
 #include "esp_coexist.h"
 #ifdef CONFIG_SOC_IEEE802154_SUPPORTED