docs: migrate time_slave detailed design from docs/features

[ryan-steel]

Description

Migrates time_slave DD from docs/features to time_slave component to match S-CORE folder layout.

shm_ptp_engine moved to time_daemon (where it belongs) in #171
ipc_channel moved to ts_client (where it belongs) in #178

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: 90207aa3-35d4-405c-8835-e6ebbacfea22
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
Loading: 3 packages loaded
    currently loading: 
Loading: 3 packages loaded
    currently loading: 
Loading: 3 packages loaded
    currently loading: 
Loading: 3 packages loaded
    currently loading: 
Loading: 3 packages loaded
    currently loading: 
Analyzing: target //:license-check (4 packages loaded, 0 targets configured)
Analyzing: target //:license-check (4 packages loaded, 0 targets configured)

Analyzing: target //:license-check (66 packages loaded, 10 targets configured)

Analyzing: target //:license-check (89 packages loaded, 10 targets configured)

Analyzing: target //:license-check (143 packages loaded, 1137 targets configured)

Analyzing: target //:license-check (154 packages loaded, 6186 targets configured)

Analyzing: target //:license-check (159 packages loaded, 6206 targets configured)

Analyzing: target //:license-check (164 packages loaded, 6255 targets configured)

Analyzing: target //:license-check (164 packages loaded, 6255 targets configured)

Analyzing: target //:license-check (167 packages loaded, 8142 targets configured)

Analyzing: target //:license-check (169 packages loaded, 9127 targets configured)

Analyzing: target //:license-check (171 packages loaded, 11350 targets configured)

Analyzing: target //:license-check (171 packages loaded, 11350 targets configured)

Analyzing: target //:license-check (171 packages loaded, 11350 targets configured)

Analyzing: target //:license-check (171 packages loaded, 11350 targets configured)

Analyzing: target //:license-check (171 packages loaded, 11350 targets configured)

INFO: Analyzed target //:license-check (172 packages loaded, 11476 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...
[16 / 16] no actions running
Target //:license.check.license_check up-to-date:
  bazel-bin/license.check.license_check
  bazel-bin/license.check.license_check.jar
INFO: Elapsed time: 32.558s, Critical Path: 2.44s
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>]

[github-actions]

The created documentation from the pull request is available at: docu-html

[BjoernAtBosch]

LGTM