Make CHIP_ERROR a class type on nrfconnect

[kpschoedel]

Problem

Having CHIP_ERROR be a class type would provide (a) type safety,
and (b) the ability to trace the source of errors (issue #8340).

Recent changes have made CHIP_ERROR a class on Linux (#8383),
cc13x2_26x2, EFR32, QPG (#8446), and ESP32 (#8469).

Change overview

• Enable CHIP_CONFIG_ERROR_CLASS on nrfconnect.

Testing

Existing tests should confirm no change to functionality.

[github-actions]

Size increase report for "esp32-example-build" from 5da31a9

File	Section	File	VM
chip-lock-app.elf	.flash.text	64	64
chip-ipv6only-app.elf	.flash.text	-172	-172
chip-shell.elf	.flash.text	20	20

Full report output

BLOAT REPORT

Files found only in the build output:
    report.csv

Comparing ./master_artifact/chip-all-clusters-app.elf and ./pull_artifact/chip-all-clusters-app.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-lock-app.elf and ./pull_artifact/chip-lock-app.elf:

sections,vmsize,filesize
.flash.text,64,64
[Unmapped],0,-64

Comparing ./master_artifact/chip-ipv6only-app.elf and ./pull_artifact/chip-ipv6only-app.elf:

sections,vmsize,filesize
[Unmapped],0,172
.flash.text,-172,-172

Comparing ./master_artifact/chip-shell.elf and ./pull_artifact/chip-shell.elf:

sections,vmsize,filesize
.flash.text,20,20
[Unmapped],0,-20

Comparing ./master_artifact/chip-temperature-measurement-app.elf and ./pull_artifact/chip-temperature-measurement-app.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-pigweed-app.elf and ./pull_artifact/chip-pigweed-app.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-persistent-storage.elf and ./pull_artifact/chip-persistent-storage.elf:

sections,vmsize,filesize

[github-actions]

Size increase report for "nrfconnect-example-build" from 5da31a9

File	Section	File	VM
chip-shell.elf	device_handles	-12	-12
chip-shell.elf	text	-84	-84
chip-lock.elf	device_handles	-4	-4
chip-lock.elf	text	-12	-12

Full report output

BLOAT REPORT

Files found only in the build output:
    report.csv

Comparing ./master_artifact/chip-shell.elf and ./pull_artifact/chip-shell.elf:

sections,vmsize,filesize
.debug_info,0,42560
.debug_loc,0,18974
.debug_line,0,11697
.debug_abbrev,0,1495
.debug_ranges,0,1432
.debug_str,0,894
.strtab,0,594
.debug_aranges,0,16
.symtab,0,16
.shstrtab,0,2
device_handles,-12,-12
text,-84,-84
.debug_frame,0,-164

Comparing ./master_artifact/chip-lock.elf and ./pull_artifact/chip-lock.elf:

sections,vmsize,filesize
.debug_info,0,96960
.debug_loc,0,50255
.debug_line,0,29630
.debug_abbrev,0,2810
.debug_ranges,0,2648
.debug_str,0,1349
.strtab,0,938
.symtab,0,32
.debug_aranges,0,24
.shstrtab,0,-2
device_handles,-4,-4
text,-12,-12
.debug_frame,0,-388