near-vm: update rkyv to 0.8

[nagisa]

This patch is best accompaned with the following short presentation https://www.youtube.com/watch?v=ON4z2LbTD-4. For the most part the structure does not change significantly, but there is quite a bit more confidence, that the right thing is being done. The executables might even be portable between machines or neard builds now!

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 24 lines in your changes missing coverage. Please review.

Project coverage is 69.97%. Comparing base (7da5c8f) to head (c0ebc70).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
runtime/near-vm/engine/src/universal/engine.rs	45.45%	9 Missing and 3 partials ⚠️
runtime/near-vm/engine/src/universal/executable.rs	66.66%	5 Missing and 3 partials ⚠️
runtime/near-vm/types/src/archives.rs	0.00%	3 Missing ⚠️
runtime/near-vm/compiler/src/section.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #12504   +/-   ##
=======================================
  Coverage   69.96%   69.97%           
=======================================
  Files         838      838           
  Lines      169135   169066   -69     
  Branches   169135   169066   -69     
=======================================
- Hits       118338   118305   -33     
+ Misses      45666    45642   -24     
+ Partials     5131     5119   -12     

Flag	Coverage Δ
backward-compatibility	0.16% <0.00%> (+<0.01%)	⬆️
db-migration	0.16% <0.00%> (?)
genesis-check	1.28% <0.00%> (+<0.01%)	⬆️
linux	69.29% <66.66%> (+<0.01%)	⬆️
linux-nightly	69.51% <66.66%> (+0.01%)	⬆️
macos	51.11% <0.00%> (+0.02%)	⬆️
pytests	1.59% <0.00%> (+<0.01%)	⬆️
sanity-checks	1.40% <0.00%> (+<0.01%)	⬆️
unittests	69.79% <66.66%> (+<0.01%)	⬆️
upgradability	0.20% <0.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

---

🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests
• JS Bundle Analysis - Avoid shipping oversized bundles