[rdk-b][mt7986][wifi-hal][Add WiFi-test-tool]

[Description]
Add WiFi-test-tool for MSP, SQC test.
The tool now only support dual band.

[Release-log]
N/A

Change-Id: I6d3d4bf65dd9ae03ac70491840eebbbde0ac2ffc
diff --git a/recipes-devtools/wifi-test-tool/files/COPYING b/recipes-devtools/wifi-test-tool/files/COPYING
new file mode 100644
index 0000000..0332e75
--- /dev/null
+++ b/recipes-devtools/wifi-test-tool/files/COPYING
@@ -0,0 +1 @@
+Copyright (c) Mediatek 2022