Add new library, which contains the calculation of the macroscopic quantities and a general cumulant computation. (Closes #13)

src/lbm/ChimeraTests.cpp

+#include <gmock/gmock.h>
+
+#include "Chimera.h"
+#include "D3Q27.h"
+
+
+
+TEST(ChimeraTest, forwardInverseChimeraWithK)
+{
+    real mfa = 1;
+    real mfb = 1;
+    real mfc = 1;
+
+    const real vv = 1.;
+    const real v2 = 1.;
+
+    const real K = 1.;
+    const real Kinverse = 1 / K;
+
+    VF::LBM::forwardInverseChimeraWithK(mfa, mfb, mfc, vv, v2, K, Kinverse);
+
+    EXPECT_THAT(mfa, testing::DoubleEq(3.));  // mfa + mfb + mfc
+    EXPECT_THAT(mfb, testing::DoubleEq(-4.)); // -(mfa + mfb + mfc + 1)
+    EXPECT_THAT(mfc, testing::DoubleEq(6.));  // (mfa + mfc) + (mfa + mfb + mfc + 1)
+}