Improve Arduino Examples

[gojimmypi]

Description

This is part 3 of 3 improving Arduino examples and related GitHub workflows. See also wolfssl #9091 and wolfssl-examples #519

Adds new .github/workflows/arduino.yml testing workflow. Tests against local wolfSSL Arduino release.

Adds .github/SECURITY.md, same as https://github.com/wolfSSL/wolfssl/blob/master/.github/SECURITY.md

There's a bit of a chicken-and-egg problem with the 3 inter-related pull requests. For now, this one uses board_list_v5.8.2.txt but should be later updated to use board_list.txt

Enclosed

Arduino CI Build 4: https://github.com/$REPO_OWNER/Arduino-wolfssl /.github/workflows/arduino.yml
- Assembles and installs an updated Arduino wolfssl library from LOCAL wolfssl master source
- Copies only compile script copied from wolfssl-examples
- Builds local examples
- No other repos used

The other 2 parts (wolfssl-examples and Arduino-wolfssl repos)

wolfssl

See wolfSSL/wolfssl#9091:

Arduino CI Build 1: https://github.com/$REPO_OWNER/wolfssl /.github/workflows/arduino.yml

• Builds Arduino library from local clone of wolfssl master branch
• Fetches examples from https://github.com/$REPO_OWNER/wolfssl-examples

wolfssl-examples

See wolfSSL/wolfssl-examples#519:

Arduino CI Build 2: https://github.com/$REPO_OWNER/wolfssl-examples /.github/workflows/arduino-release.yml
- Tests examples based on latest published release of Arduino library, NOT latest on wolfssl github.
- Should be identical to Arduino CI Build 3 in every way but wolfssl install.
- Copies only compile script from wolfssl-examples
- Builds local examples
- No other repos used

Arduino CI Build 3: https://github.com/$REPO_OWNER/wolfssl-examples /.github/workflows/arduino.yml

• Fetches current wolfSSL from https://github.com/$REPO_OWNER/wolfssl
• Creates an updated Arduino library
• Compiles local examples
• Contains the source of compile-all-examples.sh and respective board-list.txt

See also my dev examples:

• Arduino CI Build (1 of 4) wolfssl
• Arduino CI Build (2 of 4) Release Arduino wolfSSL for Local Examples
• Arduino CI Build (3 of 4) Latest wolfSSL for Local Examples
• Arduino CI Build (4 of 4) Arduino-wolfSSL

[gojimmypi]

For the reasons noted in wolfSSL/wolfssl#9091 (comment) -

I've removed the artifact-saving step in the arduino.yml workflow.