Done:
support loading from assets in skillset_builder.rs
entity_config field with skillset asset field
move every SkillSet config to assets
tests for skillset assets
tests for assets in entity configs
* Added "migration of migrations" to transfer the data from the __diesel_schema_migrations table to the refinery_schema_history table
* Removed all down migrations as refinery does not support down migrations
* Changed all diesel up migrations to refinery naming format
* Added --sql-log-mode parameter to veloren-server-cli to allow SQL tracing and profiling
* Added /disconnect_all_players admin command
* Added disconnectall CLI command
* Fixes for several potential persistence-related race conditions
- remove overwritten logging setting in server-cli
- add server-cli command to load a random area for testing without a client
- make admin add/remove commands modify ingame players instead of needing to reconnect
- add spans to par_join jobs
- added test command that loads up an area of the world
- add tracy-world-server alias
- set debug directives to info for logging