Optimize Thread Usage while Loading Resources

[alexanderkiel]

Before this change, the KV Resource Store used it's thread pool for both loading and parsing/conforming the resources. However loading is I/O but parsing/conforming is CPU bound. So it is better to use the KV Resource Store Executor only for the loading, the I/O part.

With this change the KV Resource Store uses do-async to change to a common ForkJoinPool thread. This change has also the advantage that functions that are applied after the returned future do not have to change the thread pool because the futures are already on the common ForkJoinPool.

Removed all pool switching async functions. Tested the thread pool used.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.81%. Comparing base (e3eb6c7) to head (50f2289).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1923      +/-   ##
==========================================
+ Coverage   94.77%   94.81%   +0.03%     
==========================================
  Files         319      318       -1     
  Lines       19359    19347      -12     
  Branches      478      474       -4     
==========================================
- Hits        18348    18344       -4     
+ Misses        533      529       -4     
+ Partials      478      474       -4     

Files	Coverage Δ
.../db-resource-store/src/blaze/db/resource_store.clj	100.00% <ø> (ø)
...-resource-store/src/blaze/db/resource_store/kv.clj	100.00% <100.00%> (ø)
modules/db/src/blaze/db/api.clj	95.20% <100.00%> (ø)
modules/db/src/blaze/db/impl/db.clj	97.67% <100.00%> (ø)
modules/db/src/blaze/db/node.clj	94.53% <100.00%> (ø)
modules/db/src/blaze/db/node/resource_indexer.clj	96.42% <100.00%> (-0.04%)	⬇️
...dules/interaction/src/blaze/interaction/delete.clj	100.00% <100.00%> (ø)
modules/interaction/src/blaze/interaction/read.clj	100.00% <100.00%> (ø)
.../interaction/src/blaze/interaction/transaction.clj	98.76% <100.00%> (ø)
...nc-interaction/src/blaze/job/async_interaction.clj	97.80% <100.00%> (ø)
... and 8 more

... and 2 files with indirect coverage changes