add local scheduling for local work (disabled)

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
compute input mega blocks

Link: https://github.com/GeneAssembly/biosal/issues/260
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
controller: collect mega block information

Link: https://github.com/GeneAssembly/biosal/issues/261
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
input_stream: add offset (start and end) support

Link: https://github.com/GeneAssembly/biosal/issues/262
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>