Support Multi-Arch Docker Builds (The-OpenROAD-Project#1075)

Tested on Apple M1 and AWS Graviton.

+ Add support for multiple-architecture building
    + Support for amd64, ppc64le and arm64v8 added
    + amd64 and arm64v8 will be automatically built by the CI

~ Major CI Overhauls
   ~ Added composite actions for the Docker build and setting environment variables
   ~ pdk build is now its own job, and amd64/aarch64 have a job each
   ~ matrix -> design_matrix, designs only tested on amd64 for performance reasons

~ run/build base docker images now pushed to Docker Hub based on a hash of dependency lists (to work with the buildx `docker-container` driver)

- Remove pandas (overkill for what we're using it for)

- Remove `cugr`, `drcu` *for now* (they're x86-64 Linux-only utilities)

Enable PL_ROUTABILITY_DRIVEN and PL_TIME_DRIVEN (The-OpenROAD-Project…

…#1092)

ORFS enables both of these by default.

Update OR to get pdngen fix (The-OpenROAD-Project#1094)

Make `RUN_SPEF_EXTRACTION` skip STA entirely, remove pandas (The-Open…

…ROAD-Project#1089)

~ `RUN_MAGIC` check moved to flow.tcl
~ `RUN_SPEF_EXTRACTION` now skips STA entirely
- Remove pandas (it's overkill for what we need + greatly inflates install times)

Update to use the new C++ pdngen in OR (The-OpenROAD-Project#1059)

* Update to use the new C++ pdngen in OR

designs/inverter: updated die area to be a multiple of site size
designs/s44: has no need for a custom cfg so just removed it

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

* For spm turn off FP_PDN_AUTO_ADJUST

The /8 hack produces an off-grid result.  I just manually set the
values to something reasonable.

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

* Update to the latest OR version

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

* Restore default setting of VDD_NET/GND_NET

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

* For inverter turn off FP_PDN_AUTO_ADJUST

The /8 hack produces an off-grid result.  I just manually set the values
to something reasonable.

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

* Update OR version to get pdn via enclosure fix.

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

* Add -extend_to_core_ring to add_pdn_stripe for rings outside the die area

This happens on caravel_upw.

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

* Update OR for cut enclosure parsing in odb

Commit cf8d8dc8091612f7948cfc9f19d6cfdf9913e72d

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

* Modifed caravel_upw to have to instances connected to different supplies

This is a better test of multi-power pdngen

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

* Update pdn scripts for new pdngen in OR

Remove the looping over different supplies and run pdngen once with a
full configuration using secondary supplies.

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

* check FP_PDN_MACRO_HOOKS is set

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

* update OR for via env above/below fix

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

* Update OR to get dpl fix for flipped cells

Issue reported in The-OpenROAD-Project/OpenROAD#1840 which was triggered
by the OR version update for pdngen.

Signed-off-by: Matt Liberty <mliberty@eng.ucsd.edu>

Remove Hard-coded Paths in Sample Designs (The-OpenROAD-Project#1083)

Global Placement Fixes (The-OpenROAD-Project#1039)

~ Move set_routing_layers into own file
~ Don't override global placement routability options
~ Global placement timing and routability driven issues

Distributed runs with OR changelog (The-OpenROAD-Project#1074)

~ Run CI on distributed mode
~ Try to keep track of OR changes between runs

Add Caravel User Project Wrapper to Fastest Test Set (The-OpenROAD-Pr…

…oject#1072)

+ Add caravel_upw as a design, included in the fastest_test_set
~ Alter the clean options in the makefile
~ Improve LVS mismatch message

Small QOL changes (The-OpenROAD-Project#1068)

- Change 'Running Resizer ..' to 'Running Placement Resizer..' and other
  equivalent changes
- add the piping part to run_openroad_script function allowing for
  logging the log file of the openroad script in openlane's run cmds.log
- report the relative log file path on openroad script crash
- adjust "skipping" messages