hid: Stub SetNpadJoyAssignmentModeSingle and GetNpadHandheldActivationMode

Fermi2D: limit blit area to only available area

externals: Remove special casing of zlib's tests.

common_func: Use std::array for INSERT_PADDING_* macros.

- Zero initialization here is useful for determinism.

core/am: Stub InitializeApplicationCopyrightFrameBuffer, SetApplicationCopyrightImage and SetApplicationCopyrightVisibility

common/bit_field: Remove FORCE_INLINE calls

Revert "common_func: Use std::array for INSERT_PADDING_* macros."

common_func: Use std::array for INSERT_PADDING_* macros.

- Zero initialization here is useful for determinism.

See bunneis comment here https://github.com/citra-emu/citra/pull/4629#discussion_r258533167.
They were supposed to be removed by him, but he missed them.

core/am: Stub InitializeApplicationCopyrightFrameBuffer, SetApplicationCopyrightImage and SetApplicationCopyrightVisibility

These commands require Screenshots to be implemented anyway, so they are safe to stub for now.

Port citra-emu/citra#4948: "citra_qt: add amiibo drag and drop support"

Co-Authored-By: Valentin Vanelslande <vvanelslandedev@gmail.com>

shader_ir: Fix regression on TLD4

Originally on the last commit I thought TLD4 acted the same as TLD4S and 
didn't have a mask. It actually does have a component mask. This commit 
corrects that.

shader_ir: Fix TLD4 and add bindless variant

This commit fixes an issue where not all 4 results of tld4 were being
written, the color component was defaulted to red, among other things.
It also implements the bindless variant.

kernel/scheduler: Minor changes

gl_state: Miscellaneous clean up

rasterizer_accelerated: Add intermediary for GPU rasterizers

savedata_factory: Automatically create certain savedata

Co-Authored-By: Mat M. <mathew1800@gmail.com>

This requires removing constness from some methods, but for consistency
it's removed in all methods.

OpenGL has defaults values we can trust. Remove these.

Stops relying on a fork for providing zip handling and instead tracks
the upstream branch but keeps any necessary build-related changes in the
source tree directly without modifying the libzip target itself.

maxwell_3d: Remove unused entries

Supplies CMakeLists.txt file that avoids pulling in zlib's tests into
the tree. This avoids needing to explicitly opt these tests out from
ctest.

externals: Track upstream opus

video_core: Implement texture format E5B9G9R9_SHAREDEXP.

This is only compared against, so it can be made const.