wifinina: add generated strings, improved debugging system and messages

[deadprogram]

This PR adds generated strings, improved debugging system and improved error messages to the wifinina driver.

[deadprogram]

With this PR:

sendCmd: Start StartClientTCP(2D) 04 (3)
sendParam8: 0 lastParam: false 
sendParam8: 0 lastParam: true 
spiChipDeselect
waitForChipReady()
spiChipDeselect
wifinina error: TimeoutChipReady

[deadprogram]

The only drawback of this PR is that it does increase the resulting size by nearly 1.5k:

Before this PR:

tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/ntpclient/main.go
go: downloading golang.org/x/net v0.0.0-20210614182718-04defd469f4e
go: downloading golang.org/x/text v0.3.6
   code    data     bss |   flash     ram
 134492    2468    6056 |  136960    8524
5a9025262f3decd7b331a8b8f0c54d75  ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/udpstation/main.go
   code    data     bss |   flash     ram
 134492    2464    6064 |  136956    8528
adc31f618547adcbfe5d2eeb2cb274bd  ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/tcpclient/main.go
   code    data     bss |   flash     ram
 134700    2476    6056 |  137176    8532
526bb08ba389a3b6b12d9ffa88e93e50  ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/webclient/main.go
   code    data     bss |   flash     ram
 135024    2476    6056 |  137500    8532
3c00af7c526b1f4d52566a56cf797eee  ./build/test.hex

With this PR

tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/ntpclient/main.go
go: downloading golang.org/x/net v0.0.0-20210614182718-04defd469f4e
go: downloading golang.org/x/text v0.3.6
   code    data     bss |   flash     ram
 136096    2468    6056 |  138564    8524
cd7b727cf628b948394e9d8050c7aa0d  ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/udpstation/main.go
   code    data     bss |   flash     ram
 136096    2464    6064 |  138560    8528
374065f1ff7d224cb2ccdb5119cf1891  ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/tcpclient/main.go
   code    data     bss |   flash     ram
 136[308](https://github.com/tinygo-org/drivers/actions/runs/4841230648/jobs/8627335753#step:8:309)    2476    6056 |  138784    8532
2ec94c900d92e688cdd9dbf6176ca245  ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/wifinina/webclient/main.go
   code    data     bss |   flash     ram
 136628    2476    6056 |  139104    8532
b7c636add26b4ade799ce248c3e50bb7  ./build/test.hex

[aykevl]

Oof, that's a big increase!
Not sure about this. (I generally have less of a problem with binary size in drivers because they're easier to avoid / optimize, but this is still quite a lot!).
Here is one alternative idea: log the error code and a link (possibly a shortlink) to a page where the error message can be looked up easily. That shouldn't result in a big code size increase, although it is still a bit less usable.

(I won't block this PR over the code size increase if you think it's worth it, just thinking of alternatives that might reduce the binary size somewhat).

[deadprogram]

OK, I just changed this to put most of the strings behind the wifidebug tag and still leave better error strings at cost of only 450 bytes.

Size before this PR:

$ tinygo build -size short -o test.hex -target pyportal -ldflags="-X main.ssid=rems -X main.pass=Salvador1" ./examples/wifinina/mqttsub/
   code    data     bss |   flash     ram
 180120    3036    8120 |  183156   11156

This PR without the wifidebug tag:

$ tinygo build -size short -o test.hex -target pyportal -ldflags="-X main.ssid=XXX -X main.pass=YYY" ./examples/wifinina/mqttsub/          
   code    data     bss |   flash     ram                                                                                                         
 180576    3036    8120 |  183612   11156

This PR with the wifidebug tag:

$ tinygo build -size short -o test.hex -target pyportal -ldflags="-X main.ssid=XXX -X main.pass=YYY" -tags=wifidebug ./examples/wifinina/mq
ttsub/                                                                                                                                            
   code    data     bss |   flash     ram                                                                                                         
 183048    3036    8120 |  186084   11156

[deadprogram]

Now that I have been testing #537 I am going to close this PR. The error strings can be added in a separate PR once #537 makes it in.

[deadprogram]

Reopening since #537 will not merge until TinyGo 0.29

[deadprogram]

Since this is now only 450 bytes size increase in normal (non-debug) mode, I am going to merge. We really do need it.