feat(validation): Add helper macros for common validatiors

[TjazVracko]

Description

Adds helper macros for common validators.
Adds a new sample that demonstrates the use of these helper macros.

(Also updates the readme in a separate commit)

Related #47

Areas of interest for the reviewer

All

Checklist

• My code follows the style guidelines as defined by IRNAS.
• I have performed a self-review of my code.
• My changes generate no new warnings.
• I added/updated source code documentation for all newly added or changed functions.
• I updated all customer-facing technical documentation.

After-review steps

• I will merge PR by myself.

[TjazVracko]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
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• feat(validation): Add helper macros for common validatiors #65 👈 (View in Graphite)
• feat(validation): Add validation callback support #64
• main

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[github-actions]

Coverage after merging feature/validation-helpers into feature/validation will be

24.21%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
library/protocol/binary
user_settings_protocol_binary.c	83.33%	72.97%	100%	87.18%	113, 116–118, 118, 118–119, 121–124, 135–136, 173–174, 66–67, 71–72, 80
library/user_settings
user_settings.c	46.44%	28.19%	72%	60.82%	100, 107, 107, 110, 114, 131–132, 137–138, 138, 138, 138, 138–141, 141, 141, 141, 141–142, 145, 145, 168, 176–177, 177, 177, 177, 177–178, 183–184, 184, 184, 184, 184–185, 190–191, 191, 191, 191, 191–192, 197–198, 198, 198, 198, 198–199, 209–211, 218–219, 227, 233–234, 234, 234, 234, 234–235, 240–241, 241, 241, 241, 241–242, 247–248, 248, 248, 248, 248–249, 259, 259, 259, 265, 265, 265, 265, 271, 271, 271, 271, 278–279, 279, 279, 279, 279–280, 287, 287, 287, 287, 299–300, 300, 300, 300, 300–301, 306–307, 307, 307, 307, 307–308, 314, 316, 316, 316, 318–319, 319, 319, 321, 326, 326, 326, 329, 329, 329, 344, 350, 350, 360–361, 361, 361, 361, 361–362, 368–369, 369, 369, 369, 369–370, 378, 384, 384, 384, 384, 390, 390, 398, 398, 398, 398, 408–409, 409, 409, 409, 409–410, 415–416, 416, 416, 416, 416–417, 422–423, 423, 423, 423, 423–424, 433–434, 441, 443, 443, 443, 449, 451, 451, 451–452, 454, 456, 458, 458, 458, 460–461, 461, 461, 463–464, 469, 469, 469, 47, 472, 472, 472, 48, 480, 488, 488, 488, 496, 499, 506, 509, 516, 52, 523, 523, 523–524, 524, 524–525, 527, 53, 530, 533, 535, 535, 535, 537–538, 538, 538, 540, 545, 548, 555–556, 562, 565, 567, 567, 567, 569–570, 570, 570, 572, 577, 577, 577, 58, 580, 580, 580, 587, 59, 59, 59, 59, 59, 592, 594, 594, 594, 596–597, 597, 597, 599, 60, 600, 604, 607, 61, 612, 614, 614, 614, 616–617, 617, 617, 619, 62, 62, 62, 62, 62, 620, 623, 623, 623, 626, 626, 626, 632, 634, 634, 634, 636–637, 637, 637, 639, 64, 643, 645, 645, 645, 647–648, 648, 648, 650, 653, 655, 655, 655, 657–658, 658, 658, 660, 663, 665, 665, 665, 667–668, 668, 668, 670, 675, 675, 675, 678, 678, 678, 685, 685, 685, 688, 688, 688, 693, 695, 695, 695, 697–698, 698, 698, 700, 705, 705, 705, 708, 708, 708, 715, 718, 725, 725, 725, 728, 728, 728, 769, 771, 771, 771, 773–774, 774, 774, 776–777, 779, 781, 781, 781, 783–784, 784, 784, 786–787, 791, 791, 791, 794, 794, 794, 801, 801, 801, 804, 804, 804, 811, 83–84, 88–89, 94–95, 95, 95, 95, 95–98, 98, 98, 98, 98
user_settings_json.c	45.99%	34.75%	100%	52.44%	100–101, 103, 106, 114, 127–128, 128, 128, 128, 128–129, 133–134, 143–144, 160, 160, 160, 160, 160, 160, 160, 160, 162, 165, 169–171, 173–175, 181–183, 185–187, 189–191, 193–195, 197–199, 216–217, 217, 217, 217, 217, 221–222, 222, 222,

[MarkoSagadin]

I have some minor requests :)

[MarkoSagadin]

Clean up the cmakelists file:

Suggested change

	cmake_minimum_required(VERSION 3.20)
	# create compile_commands.json for clang
	set(CMAKE_EXPORT_COMPILE_COMMANDS on)
	find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
	project(user-settings-sample-validation)
	zephyr_compile_options(-fdiagnostics-color=always)
	zephyr_include_directories(src)
	target_sources(app PRIVATE src/main.c)
	cmake_minimum_required(VERSION 3.20)
	find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
	project(user-settings-sample-validation)
	zephyr_include_directories(src)
	target_sources(app PRIVATE src/main.c)

Please check if other files need similar cleanup.

[MarkoSagadin]

Should this be n, based on the comment?

[MarkoSagadin]

Please briefly describe how the sample does this. I see that the shell is enabled, so this file should atleast say that is expected that the user should check the source code to see what is the expected range (or expected exact size) and then try changing that setting over the shell.