feat: add source_simple_connector type for standard connectors

[Lulzx]

Summary

Adds a new source component type for connectors with standard support as part of issue tscircuit/tscircuit#748.

Changes

• Create source_simple_connector schema in src/source/source_simple_connector.ts
• Add fields:
  • ftype: "simple_connector"
  • connector_standard?: "usb_c" | "m2" - The connector standard
  • pin_count?: number - Number of contacts/pins
  • gender?: "male" | "female" - Connector gender
• Export from src/source/index.ts
• Add SourceSimpleConnector to any_source_component union type

Schema

export const source_simple_connector = source_component_base.extend({
  ftype: z.literal("simple_connector"),
  connector_standard: z.enum(["usb_c", "m2"]).optional(),
  pin_count: z.number().optional(),
  gender: z.enum(["male", "female"]).optional(),
})

Related PRs

• tscircuit/core: Add Connector component
• tscircuit/props: Add StandardPartResult type
• tscircuit/parts-engine: Add USB-C connector support

Test plan

• Schema validates correctly
• Type exports work
• Existing code continues to work