David 1c7a8305b5 feat(libSceContentSearch): implement the search calls over an empty library ...

Cult of the Lamb (PPSA06465) imports libSceContentSearch, including
sceContentSearchGetContentLastUpdateId, OpenMetadataByContentId,
GetTotalContentSize and GetNumOfContent (import audit in #2686), which
were declared without parameters and threw.

Give the nine pending calls the signatures of AlexAltea/orbital
db_types.json (cc408367, lines 555-569) and SharpProspero
Interop/Content/ContentSearch.cs (5dfdb4b0), and implement the content
library the host has, which is empty:

- GetNumOfContent, GetTotalContentSize and SearchContent report 0 rows
  and 0 bytes, GetContentLastUpdateId and the search calls report update
  id 0. A search limit above 92 returns 0x809D100A and every call before
  Init returns 0x809D1001, both from SharpProspero.
- Filters and sort conditions use SharpProspero's layouts (added to
  SceTypes.hpp with size checks) and are checked against its enums;
  unknown values, null outputs and null arrays with a length throw.
- OpenMetadata and OpenMetadataByContentId throw, as no source gives the
  error for content that is not in the library, so no metadata id is
  handed out and CloseMetadata, GetMetadataFieldInfo and
  GetMetadataValue throw too.

The update id value, the argument errors and the check order are
recorded in TechnicalDebt. The four ContentSearch calls leave the
unimplemented-imports test, and guest_content_search covers the library.

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..

CMakeLists.txt

feat(libSceContentSearch): implement the search calls over an empty library

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Export.cpp

feat(libSceContentSearch): implement the search calls over an empty library

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