Added initial interfaces and some sensors implementing them

Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

src/hdc1000/hdc1000.cpp

@@ -125,6 +125,12 @@ HDC1000::getTemperature(int bSampleData)
     return (float)(m_temperature * 0.01);
 }
 
+float
+HDC1000::getTemperature()
+{
+    return getTemperature(false);
+}
+
 float
 HDC1000::getHumidity(int bSampleData)
 {
@@ -133,3 +139,9 @@ HDC1000::getHumidity(int bSampleData)
     }
     return (float)(m_humidity * 0.01);
 }
+
+float
+HDC1000::getHumidity()
+{
+  return getHumidity(false);
+}