Add descriptions and improve latex

algorithms/graph/hld.cpp

algorithms/graph/kruskal.cpp

algorithms/graph/lca.cpp

algorithms/math/big_integer.cpp

algorithms/math/binary_exponentiation.cpp

algorithms/math/legendre.cpp

algorithms/math/linear_diophantine_equation.cpp

algorithms/math/modular_multiplicative_inverse.cpp

algorithms/paradigm/ternary_search.cpp

algorithms/string/booth.cpp

algorithms/structure/mo_algorithm.cpp

algorithms/structure/trie.cpp

caderno.pdf

notebook/gen_latex.py