Release v6.65.0

What's Changed

• fix(power): don't read a block's abstract Liberty — it zeroes the block's output activity by @hernloh in #685
• fix(synth): OpenROAD stage sets dont-use after link_design by @hernloh in #692
• feat(pnr): run a whole suite blocks-first (#95 step 4, 1/3) by @hernloh in #687
• feat(pnr): --synth runs each P&R run's upstream synthesis just before it (#95 step 4, 2/3) by @hernloh in #688
• feat(pnr): -j hardens independent blocks side by side (#95 step 4, 3/3) by @hernloh in #689
• feat(pnr): floorplan.macro-placement: rtl-mp (#95 step 5) by @hernloh in #690
• docs(skill): hierarchical P&R in the implementation skill (#95 step 6) by @hernloh in #691

Full Changelog: v6.64.0...v6.65.0