Siliconcompiler

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**Minor:**

* General cleanup of documentation building.

* Tools:

* yosys: added support for specifying blackbox models via ['tool', 'yosys', 'task', 'syn_asic', 'var', 'blackbox_modules']

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**Minor:**

* Fixed packaging extraction when downloading from github.
* Fixed remote run file retrieval to avoid errors when extracting and moving files.

* Tools:

* vpr: added support for show and screenshoting tasks.

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**Minor:**

* Update remote code to honor constraints transmitted by the remote runner.
* Add fall back to package locking when file system locking is not available.
* Fixed handling of github artifact packages.
* Added build scripts for ubuntu22.

* Tools:

* vpr: add reporting images to tool driver, these can be disabled via ['tool', 'vpr', 'task', 'place' or 'route', 'var', 'enable_images'] = 'false'.

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**Minor:**

* Fixed handling of files with codec errors.
* Update package lock file handling to avoid race conditions in parallel flows.

* Tools:

* yosys: minor code cleanup in FPGA flow.
* vpr: add support for clock routing.
* surelog: added wrapper comments in output file for parsing to indicate where segments of code came from.

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**Minor:**

* Added a github data source to handle data from private repositories.

* Tools:

* vpr: added pin metrics collection for FPGA flows.

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**Minor:**

* Added keys to schema to track FPGA resources.

* Tools:

* yosys: add metrics collection for FPGA flows.
* vpr: added metrics collection for FPGA flows.