Add bulk tome uploader

[hulto]

Is your feature request related to a problem? Please describe.
Right now if teams have private tomes they want to import they have to use the API or recompile the server.

Describe the solution you'd like
Build a go script in the ./bin/ dir that will iterate over a provided directory and upload all of the tomes in it.
Directories can be expected to be in the format:

./my-tomes/
./my-tomes/supersecret-tomes/
./my-tomes/supersecret-tomes/main.eldritch
./my-tomes/supersecret-tomes/metadata.yaml
./my-tomes/supersecret-tomes/files/
./my-tomes/supersecret-tomes/files/test123
./my-tomes/our-recon-tome/main.eldritch
./my-tomes/our-recon-tome/metadata.yaml
./my-tomes/our-recon-tome/files/
./my-tomes/our-recon-tome/files/test123

Describe alternatives you've considered
Na

Additional context
Na

[KCarretto]

Deprioritized for v0.1.0 since we now have git imports