organize std library tests

alib2std/test-src/extensions/container/ArrayTest.cpp

alib2std/test-src/extensions/container/ArrayTest.h

alib2std/test-src/extensions/container/ForwardTreeTest.cpp

alib2std/test-src/extensions/container/ForwardTreeTest.h

alib2std/test-src/extensions/container/LinearSetTest.cpp

alib2std/test-src/extensions/container/LinearSetTest.h

alib2std/test-src/extensions/container/MapTest.cpp

alib2std/test-src/extensions/container/MapTest.h

alib2std/test-src/extensions/container/PtrArrayTest.cpp

alib2std/test-src/extensions/container/PtrArrayTest.h

alib2std/test-src/extensions/container/PtrTupleTest.cpp

alib2std/test-src/extensions/container/PtrTupleTest.h

alib2std/test-src/extensions/container/PtrVectorTest.cpp

alib2std/test-src/extensions/container/PtrVectorTest.h

alib2std/test-src/extensions/container/SetTest.cpp

alib2std/test-src/extensions/container/SetTest.h

alib2std/test-src/extensions/container/StringTest.cpp

alib2std/test-src/extensions/container/StringTest.h

alib2std/test-src/extensions/container/TreeBaseTest.cpp

alib2std/test-src/extensions/container/TreeBaseTest.h