[RajaBabu15]

Closes #14430

Implements the approach agreed in the issue: optionally charge Store fuel for the work done while lifting guest values into the host, at LiftContext::consume_fuel.

• New opt-in Store::set_hostcall_fuel_consumes_store_fuel(bool) (plus getter and StoreContextMut mirrors). Off by default; only has an effect with Config::consume_fuel(true).
• When enabled, each unit of hostcall fuel consumed during a lift also consumes one unit of Store fuel, charged before the copy happens. If Store fuel runs out, the remaining fuel is consumed and the lift traps with Trap::OutOfFuel. Charges already made earlier in the same lift stay charged.
• Lowering is not charged, per the discussion. Hostcall fuel consumed in compiled FACT adapters / component-to-component streams (Consume hostcall fuel in FACT adapters & streams #15030) is also not charged here.
• The fuel math reuses the existing get_fuel/set_fuel helpers. A charge that fits in the active (injected) window only bumps that counter, leaving the reserve and the async yield cadence alone.
• When the flag is off, the only cost is one Option check in consume_fuel.

Tests:

• tests/all/component_model/import.rs: flag off (default), flag on, flag on with too little fuel (OutOfFuel, fuel is 0, host fn never runs), and flag on without Config::consume_fuel.
• Unit tests for the new fuel helper in runtime/store.rs.
• Locally on aarch64 macOS: component_model (264), fuel (75) and wasmtime --lib (183) tests pass; fmt and clippy are clean. The C API was not built locally (no cmake).

Open questions:

1. Naming, and whether this belongs on Store (next to set_hostcall_fuel) or on Config.
2. The setter is currently a silent no-op without Config::consume_fuel; should it return an error like set_fuel does?
3. If one charge is larger than the active fuel window, the remaining fuel is redistributed, which restarts the async-yield countdown. Is that acceptable, or should it leave the counter positive so the next wasm fuel check handles it?

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