migrate time_slave detailed design to doxygen

[ryan-steel]

Description

Migrates the detailed design docs to doxygen to match process description guidelines which state that detailed design documentation belongs in code rather than separate design artifacts.

Related ticket

Part of #96

[github-actions]

License Check Results

🚀 The license check job ran with the Bazel command:

bazel run //:license-check

Status: ⚠️ Needs Review

Click to expand output

[License Check Output]
Extracting Bazel installation...
Starting local Bazel server (8.6.0) and connecting to it...
INFO: Invocation ID: 89c8a12b-e2c3-4405-a683-cebe13df5fc0
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
WARNING: For repository 'platforms', the root module requires module version platforms@1.0.0, but got platforms@1.1.0 in the resolved dependency graph. Please update the version in your MODULE.bazel or set --check_direct_dependencies=off
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Loading: 
Loading: 3 packages loaded
Analyzing: target //:license-check (4 packages loaded, 0 targets configured)
Analyzing: target //:license-check (4 packages loaded, 0 targets configured)

Analyzing: target //:license-check (73 packages loaded, 10 targets configured)

Analyzing: target //:license-check (91 packages loaded, 10 targets configured)

Analyzing: target //:license-check (151 packages loaded, 1433 targets configured)

Analyzing: target //:license-check (160 packages loaded, 4509 targets configured)

Analyzing: target //:license-check (164 packages loaded, 9024 targets configured)

Analyzing: target //:license-check (164 packages loaded, 9358 targets configured)

Analyzing: target //:license-check (172 packages loaded, 9417 targets configured)

Analyzing: target //:license-check (172 packages loaded, 9417 targets configured)

Analyzing: target //:license-check (172 packages loaded, 9417 targets configured)

Analyzing: target //:license-check (175 packages loaded, 11305 targets configured)

Analyzing: target //:license-check (177 packages loaded, 11553 targets configured)

INFO: Analyzed target //:license-check (177 packages loaded, 11555 targets configured).
[12 / 16] JavaToolchainCompileClasses external/rules_java+/toolchains/platformclasspath_classes; 0s disk-cache, processwrapper-sandbox ... (2 actions running)
INFO: From Generating Dash formatted dependency file ...:
INFO: Successfully converted 2 packages from Cargo.lock to bazel-out/k8-fastbuild/bin/formatted.txt
[14 / 16] JavaToolchainCompileBootClasspath external/rules_java+/toolchains/platformclasspath.jar; 0s disk-cache, processwrapper-sandbox
INFO: Found 1 target...
Target //:license.check.license_check up-to-date:
  bazel-bin/license.check.license_check
  bazel-bin/license.check.license_check.jar
INFO: Elapsed time: 31.686s, Critical Path: 2.79s
INFO: 16 processes: 12 internal, 3 processwrapper-sandbox, 1 worker.
INFO: Build completed successfully, 16 total actions
INFO: Running command line: bazel-bin/license.check.license_check ./formatted.txt <args omitted>
usage: org.eclipse.dash.licenses.cli.Main [-batch <int>] [-cd <url>]
       [-confidence <int>] [-ef <url>] [-excludeSources <sources>] [-help] [-lic
       <url>] [-project <shortname>] [-repo <url>] [-review] [-summary <file>]
       [-timeout <seconds>] [-token <token>]