The fib_* / auto_fib / golden_pocket Fibonacci indicators, the harami_cross /
tristar / tower_top_bottom candlestick patterns and the td_* DeMark family
lacked the `/// # Example` runnable doctest that ARCHITECTURE.md requires of
every indicator. Add a minimal construct-and-feed example to each. The
swing-tracker helper `pattern_swing` is not an `Indicator` and is left out.
All 23 pass `cargo test --doc` (487 doctests green).
kingchenc
8003572d92