Move SLE building and reposting (get_sl_entries, update_inventory_dimensions,
get_stock_ledger_details, get_items_and_warehouses, make_sl_entries,
repost_future_sle_and_gle) into erpnext/stock/services/stock_ledger.py as a
delegating service. All six keep thin controller delegators (each has external
callers). The repost helper *functions* stay module-level in stock_controller
(imported widely); the service calls them. Also drop import orphaned by this and
the prior bundle extraction.
Behaviour-preserving: ledger characterization snapshots and the repost item
valuation suite stay green.
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