straight propagates to route filter in get_bundle

[joamatab]

Now we also allow to use custom straight functions in get_bundle

    c = gf.Component("demo")
    c1 = c << gf.components.mmi2x2()
    c2 = c << gf.components.mmi2x2()
    c2.move((100, 40))
    routes = get_bundle(
        [c1.ports["o2"], c1.ports["o1"]],
        [c2.ports["o1"], c2.ports["o2"]],
        radius=5,
        # layer=(2, 0),
        straight=gf.partial(gf.components.straight, layer=(1, 0), width=1),
    )
    for route in routes:
        c.add(route.references)
    c.show(show_ports=True)

fixes #910

[sourcery-ai]

Sourcery Code Quality Report

❌  Merging this PR will decrease code quality in the affected files by 0.06%.

Quality metrics	Before	After	Change
Complexity	27.62 😞	27.64 😞	0.02 👎
Method Length	180.20 😞	180.48 😞	0.28 👎
Working memory	18.44 ⛔	18.45 ⛔	0.01 👎
Quality	31.93% 😞	31.87% 😞	-0.06% 👎

Other metrics	Before	After	Change
Lines	2875	2888	13

Changed files	Quality Before	Quality After	Quality Change
gdsfactory/routing/get_bundle.py	34.79% 😞	34.61% 😞	-0.18% 👎
gdsfactory/routing/get_bundle_u.py	18.80% ⛔	18.62% ⛔	-0.18% 👎
gdsfactory/routing/get_route.py	58.88% 🙂	58.88% 🙂	0.00%
gdsfactory/routing/manhattan.py	30.18% 😞	30.18% 😞	0.00%
gdsfactory/routing/path_length_matching.py	44.04% 😞	44.04% 😞	0.00%

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
gdsfactory/routing/manhattan.py	round_corners	80 ⛔	1341 ⛔	42 ⛔	0.67% ⛔	Refactor to reduce nesting. Try splitting into smaller methods. Extract out complex expressions
gdsfactory/routing/manhattan.py	_generate_route_manhattan_points	52 ⛔	741 ⛔	25 ⛔	4.78% ⛔	Refactor to reduce nesting. Try splitting into smaller methods. Extract out complex expressions
gdsfactory/routing/get_bundle_u.py	_get_bundle_uindirect_waypoints	38 ⛔	667 ⛔		9.42% ⛔	Refactor to reduce nesting. Try splitting into smaller methods
gdsfactory/routing/get_bundle.py	get_bundle	29 😞	402 ⛔	18 ⛔	16.80% ⛔	Refactor to reduce nesting. Try splitting into smaller methods. Extract out complex expressions
gdsfactory/routing/get_bundle_u.py	_get_bundle_udirect_waypoints	21 😞	552 ⛔	24 ⛔	17.26% ⛔	Refactor to reduce nesting. Try splitting into smaller methods. Extract out complex expressions

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