RFR: 8371259: ML-DSA AVX2 and AVX512 intrinsics and improvements

[Volodymyr Paprotski]

- New AVX2 intrinsics are 1.6x-6.9x faster than Java baseline 
   - `SignatureBench.MLDSA` is 1.2x-2.2x faster
   - Note: there is no AVX2-SHA3 intrinsics yet (Being reviewed https://github.com/vpaprotsk/jdk/pull/7)
- AVX512 intrinsic improvements are 1.24x-1.5x faster then current version 
  - `SignatureBench.MLDSA` is upto 5% faster, never slower

Note on intrinsic:
- The emitted (existing) AVX512 assembler was not "significantly" changed; mostly more efficient instruction selection and tighter register allocation, which allowed removal of NTT loop and stack spill.
- Code was refactored to allow reuse of same assembler (as possible) for AVX512 and AVX2

Tests and benchmarks:
- Added a fuzz test to ensure Java and intrinsic produces exactly same result
- Added benchmark to measure the performance of intrinsic itself

make test TEST="test/jdk/sun/security/provider/acvp/Launcher.java test/jdk/sun/security/provider/acvp/ML_DSA_Intrinsic_Test.java"
make test TEST="test/jdk/sun/security/provider/acvp/Launcher.java test/jdk/sun/security/provider/acvp/ML_DSA_Intrinsic_Test.java" JTREG="JAVA_OPTIONS=-XX:UseAVX=2"
make test TEST="micro:org.openjdk.bench.javax.crypto.full.SignatureBench.MLDSA" MICRO="JAVA_OPTIONS=-XX:+UnlockDiagnosticVMOptions -XX:+UseDilithiumIntrinsics;FORK=1"
make test TEST="micro:org.openjdk.bench.javax.crypto.full.SignatureBench.MLDSA" MICRO="JAVA_OPTIONS=-XX:+UnlockDiagnosticVMOptions -XX:-UseDilithiumIntrinsics;FORK=1"

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Commit messages:
 - Merge remote-tracking branch 'origin/master' into avx2-ntt
 - add copyright, whitespace and test jtreg tags
 - Fixes and comments from Anas
 - AVX2 and AVX512 intrinsics for MLDSA

Changes: https://git.openjdk.org/jdk/pull/28136/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28136&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8371259
  Stats: 2247 lines in 7 files changed: 1546 ins; 257 del; 444 mod
  Patch: https://git.openjdk.org/jdk/pull/28136.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28136/head:pull/28136

PR: https://git.openjdk.org/jdk/pull/28136