Add some limits to os-features

[thaJeztah]

gofumpt code

add benchmark for Parse, FormatAll

go.mod: bump minimum go version to go1.24

modernize --fix

FormatAll: use a string-builder for formatting os-options

ParseAll: refactor

Avoid using strings.Split, and error on empty values.

Add some limits to os-features

---

goos: darwin
goarch: arm64
pkg: github.com/containerd/platforms
cpu: Apple M3 Pro
                                                             │   before.txt    │             after2.txt              │
                                                             │     sec/op      │   sec/op     vs base                │
ParseOSOptions/valid_windows_version_and_feature                   611.7n ± 2%   592.7n ± 1%   -3.11% (p=0.000 n=10)
ParseOSOptions/valid_but_lengthy_features                          1.956µ ± 1%   1.995µ ± 3%        ~ (p=0.529 n=10)
ParseOSOptions/exploding_plus_chain                                534.6µ ± 1%   535.0µ ± 2%        ~ (p=0.912 n=10)
ParseOSOptions/kernel_config_feature_blob                          803.4µ ± 2%   822.2µ ± 3%   +2.35% (p=0.015 n=10)
FormatAllOSFeatures/plain_linux_amd64                              43.26n ± 1%   42.13n ± 8%   -2.62% (p=0.035 n=10)
FormatAllOSFeatures/windows_version_and_feature                    208.9n ± 2%   146.6n ± 3%  -29.84% (p=0.000 n=10)
FormatAllOSFeatures/valid_but_lengthy_features                     937.4n ± 1%   156.8n ± 2%  -83.27% (p=0.000 n=10)
FormatAllOSFeatures/skips_empty_features                           305.9n ± 1%   177.2n ± 5%  -42.09% (p=0.000 n=10)
FormatAllOSFeatures/kernel_config_feature_blob                  82320.00n ± 1%   60.87n ± 1%  -99.93% (p=0.000 n=10)
FormatAllOSFeatures/many_kernel_config_features_with_empties   595027.50n ± 1%   59.92n ± 2%  -99.99% (p=0.000 n=10)
FormatAllOSFeatures/too_many_features                             620.65n ± 2%   59.93n ± 1%  -90.34% (p=0.000 n=10)
geomean                                                            4.916µ        699.1n       -85.78%

                                                             │   before.txt    │               after2.txt                │
                                                             │      B/op       │     B/op      vs base                   │
ParseOSOptions/valid_windows_version_and_feature                    224.0 ± 0%     208.0 ± 0%    -7.14% (p=0.000 n=10)
ParseOSOptions/valid_but_lengthy_features                         1.109Ki ± 0%   1.109Ki ± 0%         ~ (p=1.000 n=10) ¹
ParseOSOptions/exploding_plus_chain                               496.4Ki ± 0%   496.4Ki ± 0%         ~ (p=1.000 n=10) ¹
ParseOSOptions/kernel_config_feature_blob                         720.4Ki ± 0%   720.4Ki ± 0%         ~ (p=1.000 n=10) ¹
FormatAllOSFeatures/plain_linux_amd64                               16.00 ± 0%     16.00 ± 0%         ~ (p=1.000 n=10) ¹
FormatAllOSFeatures/windows_version_and_feature                     184.0 ± 0%     160.0 ± 0%   -13.04% (p=0.000 n=10)
FormatAllOSFeatures/valid_but_lengthy_features                    1776.00 ± 0%     72.00 ± 0%   -95.95% (p=0.000 n=10)
FormatAllOSFeatures/skips_empty_features                            176.0 ± 0%     136.0 ± 0%   -22.73% (p=0.000 n=10)
FormatAllOSFeatures/kernel_config_feature_blob                  368697.00 ± 0%     24.00 ± 0%   -99.99% (p=0.000 n=10)
FormatAllOSFeatures/many_kernel_config_features_with_empties   6881841.00 ± 0%     24.00 ± 0%  -100.00% (p=0.000 n=10)
FormatAllOSFeatures/too_many_features                              272.00 ± 0%     24.00 ± 0%   -91.18% (p=0.000 n=10)
geomean                                                           4.980Ki          388.8        -92.37%
¹ all samples are equal

                                                             │  before.txt   │              after2.txt              │
                                                             │   allocs/op   │ allocs/op   vs base                  │
ParseOSOptions/valid_windows_version_and_feature                  5.000 ± 0%   4.000 ± 0%  -20.00% (p=0.000 n=10)
ParseOSOptions/valid_but_lengthy_features                         10.00 ± 0%   10.00 ± 0%        ~ (p=1.000 n=10) ¹
ParseOSOptions/exploding_plus_chain                               12.00 ± 0%   12.00 ± 0%        ~ (p=1.000 n=10) ¹
ParseOSOptions/kernel_config_feature_blob                         13.00 ± 0%   13.00 ± 0%        ~ (p=1.000 n=10) ¹
FormatAllOSFeatures/plain_linux_amd64                             1.000 ± 0%   1.000 ± 0%        ~ (p=1.000 n=10) ¹
FormatAllOSFeatures/windows_version_and_feature                   6.000 ± 0%   5.000 ± 0%  -16.67% (p=0.000 n=10)
FormatAllOSFeatures/valid_but_lengthy_features                   22.000 ± 0%   4.000 ± 0%  -81.82% (p=0.000 n=10)
FormatAllOSFeatures/skips_empty_features                          8.000 ± 0%   5.000 ± 0%  -37.50% (p=0.000 n=10)
FormatAllOSFeatures/kernel_config_feature_blob                    8.000 ± 0%   2.000 ± 0%  -75.00% (p=0.000 n=10)
FormatAllOSFeatures/many_kernel_config_features_with_empties   1034.000 ± 0%   2.000 ± 0%  -99.81% (p=0.000 n=10)
FormatAllOSFeatures/too_many_features                            20.000 ± 0%   2.000 ± 0%  -90.00% (p=0.000 n=10)
geomean                                                           12.68        4.064       -67.95%
¹ all samples are equal