Missing License metadata in `StacCommonMetadata` model

[vincentsarago]

stac-pydantic/stac_pydantic/shared.py

Lines 115 to 132 in b128135

	class StacCommonMetadata(StacBaseModel):
	"""
	https://github.com/radiantearth/stac-spec/blob/v1.0.0/item-spec/common-metadata.md#date-and-time-range
	"""
	title: Optional[str] = Field(None, alias="title")
	description: Optional[str] = Field(None, alias="description")
	start_datetime: Optional[datetime] = Field(None, alias="start_datetime")
	end_datetime: Optional[datetime] = Field(None, alias="end_datetime")
	created: Optional[datetime] = Field(None, alias="created")
	updated: Optional[datetime] = Field(None, alias="updated")
	platform: Optional[str] = Field(None, alias="platform")
	instruments: Optional[List[str]] = Field(None, alias="instruments")
	constellation: Optional[str] = Field(None, alias="constellation")
	mission: Optional[str] = Field(None, alias="mission")
	providers: Optional[List[Provider]] = Field(None, alias="providers")
	gsd: Optional[float] = Field(None, alias="gsd", gt=0)

https://github.com/radiantearth/stac-spec/blob/v1.0.0/item-spec/common-metadata.md#licensing