simplify routing

[joamatab]

• simpler routing strategies
• add array to cspdk.cells

@flaport

[sourcery-ai]

Hey @joamatab - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟡 General issues: 1 issue found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Docstrings: all looks good

---

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[sourcery-ai]

suggestion (code_refinement): Consider using a loop or a more dynamic structure for settings initialization.

The repetitive structure for initializing settings for different routing configurations could be simplified using a loop or a dictionary comprehension, enhancing maintainability and reducing code duplication.

Suggested change

	_settings_sc = dict(
	straight="straight_sc", cross_section=xs_sc, bend="bend_sc", taper="taper_sc"
	)
	_settings_so = dict(
	straight="straight_so", cross_section=xs_so, bend="bend_so", taper="taper_so"
	)
	_settings_rc = dict(
	straight="straight_rc", cross_section=xs_rc, bend="bend_rc", taper="taper_rc"
	)
	_settings_ro = dict(
	straight="straight_ro", cross_section=xs_ro, bend="bend_ro", taper="taper_ro"
	)
	_settings_nc = dict(
	straight="straight_nc", cross_section=xs_nc, bend="bend_nc", taper="taper_nc"
	)
	_settings_no = dict(
	settings_prefixes = ["sc", "so", "rc", "ro", "nc", "no"]
	settings = {
	f"settings_{suffix}": {
	"straight": f"straight_{suffix}",
	"cross_section": f"xs_{suffix}",
	"bend": f"bend_{suffix}",
	"taper": f"taper_{suffix}"
	} for suffix in settings_prefixes
	}