libcamera v0.0.2

This release contains all the work merged to libcamera over the last 5
weeks, including the following summary highlights:

Highlights:

Core:
 * New pipeline handler for the IMX ISI
 * Fixed memory leak in the logging infrastructure
 * Fixed meson support for 0.56
 * Additional Thread Safety annotations added throughout
 * Add a release method to pipeline handlers to support
   freeing resources when a camera is released, but not
   deleted.
 * Group test applications under src/apps
 * Make libdl optional to support Android builds

Application layers:
 * Added DNG File output to cam
 * Fixes for building against Android
 * gstreamer framerate control and negotiation

IPA:
 * Support setting metadata directly from (libipa) algorithms
 * Set AGC and AWB metadata for both RKISP1 and IPU3.
 * Support for enum serialization and Flags
 * Support multiple lens shading tables for different colour
   temperatures on RKISP1/i.MX8MP.

Raspberry Pi IPA:
 * Full line length control
 * Better HBLANK synchronisation and full line length control
 * Support ov9281 as ov9281_mono
 * Update colour temperature whenever manual gains change

abi-compliance-checker tells me that this release is 100% abi compatible
with v0.0.1.

Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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