Minor: Fix incorrect code format

Merging based on 3 approvals, thank you!

Fix Ubuntu build issue for inet folder

Merging based on 3 approvals, thank you!

Import SystemPacketBuffer to CHIP project

Merging based on 3 approvals, thank you!

Import tunnel config to CHIP

Merging based on 3 approvals, thank you!

Add TLV Parser

Merging per 3 approvals. Thanks

Import BLE code to CHIP

Merging per 3 approvals. Thanks

Build TunEndPoint as part of inet

Thanks, merging base on the approvals!

Allow 'make run_tests' from top-level

- `docker_build.sh` builds all
- `docker_build.sh clean` build clean
- `docker_build.sh run_tests` builds and runs tests

Remove unnecessary tabs in Makefiles

Merging based on 3 approvals, thanks!

…ang_format

remove "Language: C" section from .clang-format, "C" isn't a supported LanguageKind, according to "Language" section here: https://clang.llvm.org/docs/ClangFormatStyleOptions.html

Merging based on 3 approvals, thanks!

Fix build warnings

Thanks, based on 3 approvals, merging.

Build for Ubuntu using docker container

Merging based on 4 approvals, thanks all!

Update BUILDING.md

Fast merge! Thanks all.

Remove cppcheck rules

3 approvals, merging

Device layer generic code

Thanks, merging based on 3 approvals.

Add shellcheck github action for PRs

Merging based on 3 approvals, thanks!

run shellcheck on run_clang.sh

Merging based on 3 approvals, thanks all!

… running unit and functional tests.

tidy up clang_tidy

Merging based on 3 approvals, thanks!

…ck-target

Replace 'run_tests' with the More Familiar 'check' as the make Target

Merging based on 3 approvals, thanks!

…mat-src-accordingly

update .clang-format, re-format src/. accordingly

Merging based on 3 approvals, thanks!

Add tidy and format to make rules

Merging based on 3 approvals, thank you!

Import generic implementation of connection manager

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Change to multi level include directives for platform headers

 ### Problem
 GitHub workflow names need to have an initial capital letter, apparently,
 or need to differ from the list of jobs inside. Without the initial capital letter,
 the workflow is ignored or actions parsing halts, not sure which.

 ### Changes
 * capitalize shellcheck's "name:"
 * remove unnecessary repo token argument (copy pasta)

Import software update manager generic code

Implement a QRCode payload generator

Merging based on 3 approvals from separate member companies.

Adds enhanced autotools build system used by openthread and openweave projects:

* Package management: 'make dist' and 'make distcheck'
* Cross-platform handling: (Linux, Darwin, iOS, Android, embedded arm, etc.)
* Multiple compiler support: clang, GCC
* Integrates automated testing framework: 'make check'
* Code style enforcement: 'make pretty' and 'make pretty-check' integration with clang-format

Import generic platform layer code

Fix shellcheck (should also resurrect Tidy)