feat: env vars for cpu and nbCores pow parameters

DUNITER_POW_CPU
DUNITER_POW_NBCORES
7 jobs for !1405 with pini in 23 minutes and 22 seconds (queued for 8 seconds)
latest detached
Status Job ID Name Coverage
  Tests
passed #56826
redshift
tests

00:18:00

69.31%
 
  Package
manual #56828
redshift allowed to fail manual
package:test:docker-test-image
manual #56827
redshift allowed to fail manual
releases:test
 
  Quality
passed #56830
redshift
audit_dependencies

00:02:09

passed #56829
redshift
fmt_and_clippy

00:05:22

 
  Integration
manual #56831
redshift allowed to fail manual
sync_g1
manual #56832
redshift allowed to fail manual
sync_gtest