refactor(quickadapter)!: rename mislabeled log-return feature columns (#153)

refactor(quickadapter)!: rename mislabeled log-return feature columns (#153)

Rename FreqAI feature columns for name/computation coherence.

Mislabeled log returns:
- %-tcp-period       -> %-top_log_return-period
- %-bcp-period       -> %-bottom_log_return-period
- %-close_pct_change -> %-close_log_return (QuickAdapterV3 and ReforceXY RLAgentStrategy)

Namespace harmonization with the %-dist_to_<x> convention:
- %-distzlema50 -> %-dist_to_zlema_50
- %-distzlema12 -> %-dist_to_zlema_12
- %-distzlema26 -> %-dist_to_zlema_26

BREAKING CHANGE: FreqAI feature column names changed; existing trained models
must be retrained since the feature identifiers differ.