Change Details

Following the discussion on T3034, we decided to replace SWHID with two or three classes: * QualifiedSWHID to replace the existing SWHID (standard types + qualifiers) * ExtendedSWHID for internal use in Software Heritage (extra types + no qualifiers) * maybe CoreSWHID, for "core SWHID" only (standard types + qualifiers) Since migrating from SWHID will break existing code, this commit uses the opportunity to modernize it a little, ie.: * `keyword`-only constructor, to get rid of the hacky default values for `object_type` and `object_id` * enum instead of strings for the object type * `bytes` instead of an hex string for the object id * rename `metadata` to `qualifiers`

Following the discussion on T3034, we decided to replace SWHID with two or three classes: * QualifiedSWHID to replace the existing SWHID (standard types + qualifiers) * CoreSWHID, for "core SWHID" only (standard types + no qualifiers) * ExtendedSWHID for internal use in Software Heritage (extra types + no qualifiers) Since migrating from SWHID will break existing code, this commit uses the opportunity to modernize it a little, ie.: * `keyword`-only constructor, to get rid of the hacky default values for `object_type` and `object_id` * enum instead of strings for the object type * `bytes` instead of an hex string for the object id * rename `metadata` to `qualifiers`

Following the discussion on T3034, we decided to replace SWHID with two or three classes: * QualifiedSWHID to replace the existing SWHID (standard types + qualifiers) * Extended* CoreSWHID, for internal use in Software Heritage (extra"core SWHID" only (standard types + no qualifiers) * maybe Core* ExtendedSWHID, for "core SWHID" only (standardinternal use in Software Heritage (extra types + no qualifiers) Since migrating from SWHID will break existing code, this commit uses the opportunity to modernize it a little, ie.: * `keyword`-only constructor, to get rid of the hacky default values for `object_type` and `object_id` * enum instead of strings for the object type * `bytes` instead of an hex string for the object id * rename `metadata` to `qualifiers`