feat: add snakemake

spack-environment/dev/spack.yaml

@@ -75,6 +75,7 @@ spack:
     - py-wurlitzer
     - py-yapf
     - root
+    - snakemake
     - spdlog
     - stow
     - tensorflow-lite

spack-environment/packages.yaml

@@ -285,6 +285,10 @@ packages:
     - '@6.28.04'
     - cxxstd=17 +fftw +fortran +gdml +http -ipo +mlp +pythia8 +root7 +tmva +vc -webgui +xrootd +ssl
     - any_of: [+opengl +x, -opengl -x]
+  snakemake:
+    require:
+    - '@7.22.0'
+    - +http +s3
   spdlog:
     require:
     - '@1.11.0'