Landsat 9 script for surface area calculation is missing from TMSOS.

[SanchitMinocha]

Please add landsat9 also in run_sarea_for_res() in run_sarea.py

    # Sentinel-2
    log.debug(f"Reservoir: {reservoir_name}; Downloading Sentinel-2 data from {start_date} to {end_date}")
    sarea_s2(reservoir_name, reservoir_polygon, start_date, end_date, os.path.join(datadir, 's2'))
    s2_dfpath = os.path.join(datadir, 's2', reservoir_name+'.csv')

    # Landsat-8
    log.debug(f"Reservoir: {reservoir_name}; Downloading Landsat-8 data from {start_date} to {end_date}")
    sarea_l8(reservoir_name, reservoir_polygon, start_date, end_date, os.path.join(datadir, 'l8'))
    l8_dfpath = os.path.join(datadir, 'l8', reservoir_name+'.csv')

    # Sentinel-1
    log.debug(f"Reservoir: {reservoir_name}; Downloading Sentinel-1 data from {start_date} to {end_date}")
    s1_dfpath = sarea_s1(reservoir_name, reservoir_polygon, start_date, end_date, os.path.join(datadir, 'sar'))
    s1_dfpath = os.path.join(datadir, 'sar', reservoir_name+'_12d_sar.csv')

    tmsos = TMS(reservoir_name, reservoir_area)
    result = tmsos.tms_os(l8_dfpath=l8_dfpath, s2_dfpath=s2_dfpath, s1_dfpath=s1_dfpath)

Also add sarea_cli_l9.py script which got missed in some previous commit.