use FileHandle and SimpleBuffer in volume server

src/servers/volume/common/binary-schema.ts

src/servers/volume/common/data-format.ts

src/servers/volume/common/file.ts

src/servers/volume/pack/ccp4.ts

src/servers/volume/pack/data-model.ts

src/servers/volume/pack/main.ts

src/servers/volume/pack/sampling.ts

src/servers/volume/pack/writer.ts

src/servers/volume/server/api.ts

src/servers/volume/server/query/data-model.ts

src/servers/volume/server/query/execute.ts