docs: refresh CLI guide for 1.0.3

[Caesarsage]

Refreshes the CLI automation guide, which described the pre-1.0 CLI. 85.

The page had drifted enough to mislead:

• it invoked microcks-cli test; the binary has been microcks since 1.0.0
• brew install microcks-cli installs a legacy formula stranded at 0.5.8 — the tap
  carries two, and microcks/tap/microcks is current. This is the root cause of the
  stale binary name throughout the page.
• the curl example pinned release 0.5.5 and ran chmod +x on a .tar.gz, so it
  could not work as written; macOS also ships as darwin_all, not per-architecture
• it covered only test and import

Corrected the binary name, formula and install commands, then added sections in the
existing numbered-step voice for login/context and start/stop, imports, --output,
--dry-run, and exit codes in CI. Also replaced a hardcoded Keycloak secret with a
placeholder.

Verification

hugo builds clean, all 15 internal links resolve, and the misspell CI step passes
locally. The install command in the guide was run end to end and extracts a working
binary.

Companion PR: microcks/microcks-cli#509

[Caesarsage]

cc: @Harsh4902 @Vaishnav88sk

for review