networkmanager-softap-config: Add SoftAP solution for gateway blueprint

Deploy a system-connection which enables the networkmanager hotspot
feature and creates a WiFi SoftAP. WiFi properties like channel, band,
SSID and password stay the same as with the former hostapd based solution.

Signed-off-by: Stefan Schmidt <stefan.schmidt@huawei.com>

meta-oniro-blueprints/conf/distro/oniro-linux-blueprint-gateway.conf

@@ -19,6 +19,7 @@ IMAGE_INSTALL_append = "\
     packagegroup-thread-client \
     mosquitto \
     coap \
+    networkmanager-softap-config \
     "
 # Avoid build warning(s) for ununsed extra partitions.
 ST_VENDORFS = "0"

meta-oniro-blueprints/recipes-connectivity/networkmanager/networkmanager-softap-config/SoftAP.nmconnection

+[connection]
+id=SoftAP
+uuid=3b73c72c-be72-4458-9fd7-e8b1d6ee4e8d
+type=wifi
+autoconnect=true
+interface-name=wlan0
+permissions=
+
+[wifi]
+band=bg
+channel=6
+mac-address-blacklist=
+mode=ap
+ssid=Oniro Project WiFi
+
+[wifi-security]
+group=ccmp;
+key-mgmt=wpa-psk
+pairwise=ccmp;
+proto=rsn;
+psk=12345678
+
+[ipv4]
+address1=172.16.47.1/24,172.16.47.1
+dns-search=
+method=shared
+
+[ipv6]
+addr-gen-mode=stable-privacy
+dns-search=
+method=auto
+
+[proxy]

meta-oniro-blueprints/recipes-connectivity/networkmanager/networkmanager-softap-config_git.bb

+# SPDX-FileCopyrightText: Huawei Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://${ONIRO_COREBASE}/LICENSES/Apache-2.0.txt;md5=ef3dabb8f39493f4ea410bebc1d01755"
+
+SRC_URI = "file://SoftAP.nmconnection"
+
+do_install_append() {
+    install -D -m0600 ${WORKDIR}/SoftAP.nmconnection ${D}${libdir}/NetworkManager/system-connections/SoftAP.nmconnection
+}
+
+FILES_${PN} += "${libdir}/NetworkManager/system-connections/"