luci-app-dawn: Add configuration page

[findlayfeng]

Add the configuration page under the network path
Move hearing_map and network_overview pages to status path

• This PR is not from my main or master branch 💩, but a separate branch ✅
• Each commit has a valid ✒️ Signed-off-by: <[email protected]> row (via git commit --signoff)
• Each commit and PR title has a valid 📝 <package name>: title first line subject for packages
• Incremented 🆙 any PKG_VERSION in the Makefile
• Tested on: (architecture, openwrt version, browser) ✅
• ( Preferred ) Mention: @ the original code author for feedback
• ( Preferred ) Screenshot or mp4 of changes:
• ( Optional ) Closes: e.g. openwrt/luci#issue-number
• ( Optional ) Depends on: e.g. openwrt/packages#pr-number in sister repo
• Description: (describe the changes proposed in this PR)

[systemcrash]

Could you provide a few overview screenshots please @findlayfeng ?

[systemcrash]

ping @findlayfeng

[findlayfeng]

[systemcrash]

We absolutely shall not use default values anywhere. Those first variables in the screen shot (thank you) don't have any placeholder values. What are the units for bandwidth? What is a collision domain? Is iv - init vector?

There's no value type or error checking for fields. Do the IP fields only take ipv4 and some random text appended to them? Or must they be strictly ipv4? ipv6?

[systemcrash]

ping @findlayfeng