repo: add .clang-format file, format C++

[arkjedrz]

• Add .clang-format file at the repo root.
• Run clang-format over all C++ files.

Resolves #218

[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 (8.3.0) and connecting to it...
INFO: Invocation ID: 250b29ec-bb63-4226-a8c1-5b7acc989336
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
DEBUG: Rule 'rust_qnx8_toolchain+' indicated that a canonical reproducible form can be obtained by modifying arguments integrity = "sha256-oEubHgeZDdT0svMmBKJx7c3/2TdSI/vfwRUyDn+TPGA="
DEBUG: Repository rust_qnx8_toolchain+ instantiated at:
  <builtin>: in <toplevel>
Repository rule http_archive defined at:
  /home/runner/.bazel/external/bazel_tools/tools/build_defs/repo/http.bzl:394:31: in <toplevel>
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
WARNING: For repository 'score_process', the root module requires module version score_process@1.3.2, but got score_process@1.4.0 in the resolved dependency graph. Please update the version in your MODULE.bazel or set --check_direct_dependencies=off
Computing main repo mapping: 
Loading: 
Loading: 3 packages loaded
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 (86 packages loaded, 10 targets configured)

Analyzing: target //:license-check (153 packages loaded, 2226 targets configured)

Analyzing: target //:license-check (159 packages loaded, 6997 targets configured)

Analyzing: target //:license-check (159 packages loaded, 6997 targets configured)

INFO: Analyzed target //:license-check (162 packages loaded, 9013 targets configured).
[13 / 14] [Prepa] Generating Dash formatted dependency file ...
INFO: From Generating Dash formatted dependency file ...:
INFO: Successfully converted 62 packages from Cargo.lock to bazel-out/k8-fastbuild/bin/formatted.txt
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: 22.928s, Critical Path: 0.31s
INFO: 14 processes: 5 disk cache hit, 9 internal.
INFO: Build completed successfully, 14 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

[PiotrKorkus]

lgtm

In SCORE the rules have not been agreed yet - https://eclipse-score.github.io/score/main/contribute/development/cpp/coding_guidelines.html#code-style
But there is a benefit to have it unified at least across repo

[vinodreddy-g]

@arkjedrz Lets use this from comm repo - https://github.com/eclipse-score/communication/blob/main/.clang-format. Easier to align in s-core with this i guess.

[vinodreddy-g]

LGTM