initiate support for 11be

[rmandrad]

• This PR is not from my main or master branch 💩, but a separate branch ✅
• Each commit has a valid ✒️ Signed-off-by: <my@email.address> row (via git commit --signoff)
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• Tested on: (architecture, openwrt version, browser) ✅
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• Description: (describe the changes proposed in this PR)

Tested on banana rpi4 / mt7996

note - that iwinfo perhaps needs to be changed to support 11be as systemFeatures are drawn from iwinfo ... looking into this separately

Signed-off-by : Rudy Andram

[Neustradamus]

Replaced by:

• luci-wireless: Add 11be support #7302

Linked to:

• luci-wireless: add 11be support #7279
• initiate support for 11be #7277