flist v2: fungistore FL (FungiList) format

[muhamadazmy]

Right now the flist format (while uses sqlite db internally) is still has the information packed with capnp which makes it very hard to build tools to work with the flist (for example, modifying)

A new format that is easily editable by other users is needed, so a normalized sql db format will work the best since sqlite support is wide spread already.

• normalization of the inode information in normal tables format easy (and more efficient) to process
  • this will simplify the fuse implementation already
• 0-fs tools to build flists, using different storage backends for blobs, we will support zdb of course but other distributed object stores need to be researched
• on creation of flist, the flist need to hold partitioning and replication information about where the objects are stored. it means on creation the replication/partitioning policies need to be configured
  • this works with the backend of choice to store the blobs in the right locations and keep this information in the db

Specifications

TBD