alternative storage scheme for `ard_dir`

[johntruckenbrodt]

Currently, the ard_dir storage scheme follows the pattern

<mgrs>/<product>

for example

32UMG/S1A_IW_NRB__1SDV_20221230T170954_046564_059481_32UMG_1E7E

It would be good to give flexibility to the user to adjust this.

Potential solution

Introduce a new configuration parameter storage_scheme, which could look like this to reproduce the above:

storage_scheme = {mgrs}/{pid}

where

• mgrs: the full name of the MGRS tile
• pid: the product identifier

Additional keys for adjusting the scheme could be (including examples following the above):

• utm: the UTM zone (32)
• gzd: the grid zone designator (32U)
• lid: the latitude band identifier (U)
• sid: the square identifier (MG)
• year: the acquisition year (2022)
• month: the acquisition month (12)

The above could also be expressed as

storage_scheme = {utm}{lid}{sid}/{pid}

or

storage_scheme = {gzd}{sid}/{pid}

A more complex example:

storage_scheme = {utm}/{lid}/{sid}/{year}/{month}/{pid}

translating to

32/U/MG/2022/12/S1A_IW_NRB__1SDV_20221230T170954_046564_059481_32UMG_1E7E