organize std library

alib2std/src/alib/array

alib2std/src/alib/bitset

alib2std/src/alib/deque

alib2std/src/alib/forward_list

alib2std/src/alib/forward_tree

alib2std/src/alib/linear_set

alib2std/src/alib/list

alib2std/src/alib/map

alib2std/src/alib/pair

alib2std/src/alib/ptr_array

alib2std/src/alib/ptr_tuple

alib2std/src/alib/ptr_vector

alib2std/src/alib/set

alib2std/src/alib/string

alib2std/src/alib/tree

alib2std/src/alib/trie

alib2std/src/alib/tuple

alib2std/src/alib/unordered_map

alib2std/src/alib/variant

alib2std/src/alib/vector