BaseDevice::getProperty as non-pointer result (indilib#1453)

* BaseDevice::getProperty as non-pointer result.

* Remove 'const', use isLabelMatch function.

* Add const accessors.

* Remove const.

* Add INDI::Properties implementation.

* BaseDevice::getProperties as non-pointer result.

* Format document.

* Use isNameMatch function.

* Add erase method.

* Fix constructors.

* Add getTypeAsString method.

* Update Widget/Property API.

CMakeLists.txt

@@ -183,6 +183,7 @@ SET(indiclient_CXX_SRC
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/basedevice.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/baseclient.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indiproperty.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indiproperties.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indipropertybasic.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indipropertytext.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indipropertynumber.cpp
@@ -255,6 +256,7 @@ SET(indiclientqt_CXX_SRC
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/basedevice.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/baseclientqt.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indiproperty.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indiproperties.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indipropertybasic.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indipropertytext.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indipropertynumber.cpp
@@ -428,6 +430,7 @@ SET(indidriver_CXX_SRC
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/basedevice.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/defaultdevice.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indiproperty.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indiproperties.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indipropertybasic.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indipropertytext.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indipropertynumber.cpp
@@ -1997,6 +2000,7 @@ if (INDI_BUILD_DRIVERS OR INDI_BUILD_CLIENT OR INDI_BUILD_QT5_CLIENT)
         ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/indifilterinterface.h
         ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/indirotatorinterface.h
         ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indiproperty.h
+        ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indiproperties.h
         ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indipropertybasic.h
         ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indipropertytext.h
         ${CMAKE_CURRENT_SOURCE_DIR}/libs/indibase/property/indipropertynumber.h