Import muCF cycle rate data and construct muCF model

doc/_static/zotero.bib

@@ -3760,3 +3760,19 @@ @article{yamashita-muonicspin-2022
     url = {https://www.nature.com/articles/s41598-022-09487-0},
 	pages = {6393}
 }
+
+@article{faifman-mucfformation-1996,
+	title = {Quadrupole corrections to matrix elements of transitions in resonant reactions of muonic molecule formation},
+    author = {Faifman, M. P. and Strizh, T. A. and Armour, E. A. G. and Harston, M. R.},
+    year = 1996,
+    month = dec,
+	volume = {101-102},
+	rights = {http://www.springer.com/tdm},
+	issn = {0304-3834, 1572-9540},
+	url = {http://link.springer.com/10.1007/BF02227621},
+	doi = {10.1007/BF02227621},
+	pages = {179--189},
+	number = {1},
+	journaltitle = {Hyperfine Interactions},
+	shortjournal = {Hyperfine Interact},
+}

doc/implementation/mucf-physics.rst

@@ -127,7 +127,7 @@ formation, molecule formation, and fusion.
 .. doxygenclass:: celeritas::DTMixMucfModel
 
 Most of the data is material-dependent, being calculated and cached during model
-construction. All of the cached quantities are calculated and added to
+construction. All the cached quantities are calculated and added to
 host/device data via :cpp:class:`celeritas::detail::MucfMaterialInserter`.
 
 .. doxygenclass:: celeritas::detail::MucfMaterialInserter

src/celeritas/CMakeLists.txt

@@ -107,6 +107,8 @@ list(APPEND SOURCES
   mat/MaterialParams.cc
   mat/MaterialParamsOutput.cc
   mat/detail/Utils.cc
+  mucf/model/detail/EquilibrateDensitiesCalculator.cc
+  mucf/model/detail/InterpolatorHelper.cc
   mucf/model/detail/MucfMaterialInserter.cc
   mucf/process/MucfProcess.cc
   neutron/model/CascadeOptions.cc