Gdsfactory

- cells accept `*args`
- `cell` autonaming includes the complete keyword arguments keys (not only the first letter of each argument)
- fix straight_pin and straight_heater_doped length when they have tapers
- waveguide template defaults to euler=True for picwriter components (spiral)
- add `Component.get_ports_xsize()`
- add `toolz` library to requirements

- move components python files to the same folder
- add components.write_factory function to generate dict
- added filecmp for testing components width difftest, only does XOR if files are different. This speeds the check for larger files.

- change port naming convention from WNES to o1, o2, o3 for optical, and e1, e2, e3, e4 for electrical
- add Component.auto_rename_ports()
- add `ports_layer` property to Component and ComponentReference to get a map
- `Component.show()` `show_ports` and `show_subports` show a container (do not modify original component)
- add port_types to cross_section
- rename straight_horizontal_top to straight_x_top

- add straight_rib, straight_heater_metal and straight_heater_doped
- `xs2 = partial(cross_section)` does not require defining `xs2.__name__`
- replace gf.extend[.] with gf.components.extension.
- Component.show() uses `add_pins_triangle` as default to show port orientation
- add gf.containers.bend_port
- get_netlist considers x,y,width to extract port connectivity

- pass cross_section functions to component factories instead of registering waveguides in TECH.waveguide
- snap_to_grid is now a cross_section property
- replace Waveguide with gdsfactory.cross_section functions
- add pydantic.validate_arguments to cross_section
- functools.partial have unique names
- partial functions include settings for JSON and name
- include xor flag when doing a gdsdiff
- delete StrOrDict, you can use functools.partial instead to customize functions
- include --xor flag to `gf gds diff --xor` CLI to run a detailed XOR between 2 GDS files

- rename `pp` to `gdsfactory`
- recommend `import gdsfactory as gf`
- rename `pf` CLI to `gf`