docs: document built-in --jq flag on query/mutation commands
docs: document --depth flag on queries/mutations commands
docs: document gqlcli HTTP controls and subscriptions
update: sync wiki with current CLI behavior and library features
Add full wiki documentation Home page + 9 detailed pages covering installation, CLI usage, command reference, configuration, output formats, batch operations, library HTTP mode, library inline mode, and example application. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>