Use nextest profiles to configure CI (#17220)

This centralises the configuration and allows certain overrides to be CI
specific.

.github/workflows/ci.yml

@@ -290,7 +290,7 @@ jobs:
             --cargo-profile fast-build \
             --features python-patch,native-auth,secret-service \
             --workspace \
-            --status-level skip --failure-output immediate-final --no-fail-fast -j 20 --final-status-level slow
+            --profile ci-linux
 
   cargo-test-macos:
     timeout-minutes: 20
@@ -333,7 +333,7 @@ jobs:
             --no-default-features \
             --features python,python-managed,pypi,git,git-lfs,performance,crates-io,native-auth,apple-native \
             --workspace \
-            --status-level skip --failure-output immediate-final --no-fail-fast -j 12 --final-status-level slow
+            --profile ci-macos
 
   cargo-test-windows:
     timeout-minutes: 15
@@ -389,7 +389,7 @@ jobs:
             --no-default-features \
             --features python,pypi,python-managed,native-auth,windows-native \
             --workspace \
-            --status-level skip --failure-output immediate-final --no-fail-fast -j 20 --final-status-level slow
+            --profile ci-windows
 
   # Separate jobs for the nightly crate
   windows-trampoline-check: