wpa_supplicant: Add SAE handshake support for WPA3-PSK

Under WPA3-Personal, SAE authentication is used to derive PMK
which is more secure and immune to offline dictionary attacks.
1. Add modules to generate SAE commit/confirm for the handshake
2. Add modules that build and parse SAE data in Auth frames
3. Add WPA3 association and key mgmt definitions
4. Invert y-bit while solving for ECC co-ordinate -
     Once an X co-ordinate is obtained, solving for Y co-ordinate
     using an elliptical curve equation results in 2 possible values,
     Y and (P - Y), where p is the prime number. The co-ordinates are
     used for deriving keys in SAE handshake. As par the 802.11 spec
     if LSB of X is same as LSB of Y then Y is chosen, (P - Y) otherwise.
     This is not what is implemented, so fix this behavior to obtain the
     correct Y co-ordinate.

components/esp_wifi/include/esp_wifi_types.h

@@ -56,6 +56,7 @@ typedef enum {
     WIFI_AUTH_WPA2_PSK,         /**< authenticate mode : WPA2_PSK */
     WIFI_AUTH_WPA_WPA2_PSK,     /**< authenticate mode : WPA_WPA2_PSK */
     WIFI_AUTH_WPA2_ENTERPRISE,  /**< authenticate mode : WPA2_ENTERPRISE */
+    WIFI_AUTH_WPA3_PSK,         /**< authenticate mode : WPA3_PSK */
     WIFI_AUTH_MAX
 } wifi_auth_mode_t;