Add more CI workflows for wolfSSH

[aidangarske]

• codespell.yml: Automated spell checking with project-specific ignore list
• multi-compiler.yml: Test builds with gcc-11/12/13 and clang-14/15/17
• sanitizer.yml: Memory safety testing with ASan, UBSan, and LeakSan

[Copilot]

Pull request overview

Adds additional GitHub Actions CI coverage (codespell, multi-compiler builds, sanitizers) and aligns the codebase with automated spell-checking by fixing various typos across source, tests, examples, and docs.

Changes:

• Add new CI workflows: codespell, multi-compiler build matrix, and sanitizer runs.
• Fix widespread spelling/wording issues in comments, logs, help text, and documentation.
• Adjust portability/warning-handling in wolfssh/port.h for Clang variadic-macro diagnostics.

Reviewed changes

Copilot reviewed 25 out of 25 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
wolfssh/port.h	Adds Clang diagnostic push/pop around variadic macro definitions.
wolfssh/internal.h	Fixes typo in struct field comment.
tests/auth.c	Fixes test output string typo.
tests/api.c	Fixes comment typo.
src/wolfterm.c	Fixes comment typos in control-sequence handling.
src/wolfsftp.c	Fixes multiple typos in comments/log strings.
src/wolfscp.c	Fixes typos in comments/log strings.
src/ssh.c	Fixes typos in comments/log strings.
src/internal.c	Fixes typos in comments.
src/certman.c	Fixes typos in comments/log strings.
examples/sftpclient/sftpclient.c	Fixes typos in comments/print output.
examples/echoserver/echoserver.c	Fixes typos in comments/print output (including usage text).
examples/client/client.c	Fixes typos and tightens strncpy bound for sun_path.
apps/wolfsshd/wolfsshd.c	Fixes typos in comments/log strings.
apps/wolfsshd/test/ssh_kex_algos.sh	Fixes typo in script comment.
apps/wolfsshd/test/run_all_sshd_tests.sh	Fixes typo in script comment.
apps/wolfsshd/test/README.md	Fixes typo in README text.
apps/wolfsshd/configuration.h	Fixes typo in comment.
apps/wolfsshd/configuration.c	Fixes typo in TODO comment.
apps/wolfsshd/auth.c	Fixes typos in comments/log strings.
apps/wolfssh/wolfssh.c	Fixes typos in comments.
ChangeLog.md	Fixes typos in release notes.
.github/workflows/sanitizer.yml	New sanitizer CI workflow (ASan/UBSan/LeakSan).
.github/workflows/multi-compiler.yml	New multi-compiler CI workflow (gcc/clang matrix).
.github/workflows/codespell.yml	New codespell CI workflow with project ignore list.

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[Copilot]

Pull request overview

Copilot reviewed 26 out of 26 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (2)

examples/client/client.c:579

• sun_path is now truncated to sizeof(sun_path) - 1, but size is still computed from strlen(sockName). If sockName exceeds sun_path, connect() will be called with an addrlen that doesn't match the actual (truncated) path and can exceed sizeof(struct sockaddr_un). Compute the length with a bounded strnlen()/WSTRNLEN() and/or validate that sockName fits before calling connect().

            strncpy(name->sun_path, sockName, sizeof(name->sun_path) - 1);
            name->sun_path[sizeof(name->sun_path) - 1] = '\0';
            size = strlen(sockName) +
                    offsetof(struct sockaddr_un, sun_path);

apps/wolfssh/wolfssh.c:606

• Same issue as in the client example: sun_path is truncated to sizeof(sun_path) - 1, but size uses WSTRLEN(sockName) (unbounded). If the env var path is longer than sun_path, connect() may be passed an incorrect/oversized addrlen. Use a bounded length (e.g., WSTRNLEN) and/or reject oversized paths before calling connect().

            WSTRNCPY(name->sun_path, sockName, sizeof(name->sun_path) - 1);
            name->sun_path[sizeof(name->sun_path) - 1] = '\0';
            size = WSTRLEN(sockName) +
                    offsetof(struct sockaddr_un, sun_path);

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