Major: Nero combine with TPU, new link aggregation networking

[jr1221]

Changes

• Removes TPU access point configurations and packages
• Switches network/interfaces functionalilty to be run by a very simple shell script. It has two arguments, init run on boot and deinit run before shutdown. S40quicknet triggers such runs in a blocking manner. This shell script modprobes and creates all necessary links, as well as manages the lifetime of wpa_supplicant. Therefore disables ifupdown scripting.
• Adds to that script a probe of the module bonding and usage of iproute2 to configure a linux bonded interface at bond0. Such an interface queries both wlan0 and wlan1 every 100 miliseconds for a change in state, and shifts network packets to the currently active interface. If both interfaces are active, wlan1 (2.4ghz) takes precedence as it will always be faster.
• Modifies the existing station mode LEDs to flash as follows:
  🔴 : Solid --> HaLow on, in use; Blinking --> HaLow connected, inactive; Unlit --> no HaLow link
  🟡 : Solid --> 2.4 ghz on, and implied in use; Blinking --> No connection for either interface (wireless offline); Unlit --> no 2.4ghz link
  Both Unlit --> Software or hardware failure, HaLow HAT most likely not active
  Further requres existing station mode LED checks to use json jq parsed iproute2 commands to ensure stability.
• Adds a wpa_supplicant_base.conf to go along with wpa_supplicant_halow.conf, which by default only connects to the router H68K.

Nero:
Get rid of nero defconfig, use TPU for everything.

Previous oversights fixed:

• enables wpa_supplicant syslog support
• enables wpa_supplicant logfile
• switches access point LEDs to parse iproute2 in one case

Notes

Reconnection to primary (2.4ghz) is awfully slow (1+ minutes). If this code further holds up, migrating quicknet to AP may be in order (and nero if it remains).

Test Cases

• All combinations of network loss/restoration work at any time after boot.
• current networking behavior is the same.
• nero works

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Closes #94

[nwdepatie]

lgtm and tested