Slow startup with big profile

[wiblaa]

jEveassets startup is (very) slow with a big profile (2.6GB)

Load times:
CORE: 2 seconds
DATA: 4 minutes 34 seconds - spends a lot of time apparently maxing out one core/thread, RAM sits at 15-16GB for a while, then jumps to 18GB
GUI: 1 minute 8 seconds

Some part of the data loading process seems to be singlethreaded and it takes quite a while to finish loading.

[GoldenGnu]

Profiles

Option 1: SQLite

Migrate all profile data to SQlite

Option 2: Move profiles into multiple files

profiles/#Default.xml
   #Default (directory)
      assets.xml
      indystry_jobs.xml
      etc.

Compare Options

Super important dev build info:
https://wiki.jeveassets.org/devbuild (please read to keep your data safe, it's very short)

Dev Build 1
Profile split up into smaller xml files and loaded/saved in threads
https://eve.nikr.net/jeveassets/jeveassets-8.0.0-dev1-xml.zip

Dev Build 2
Profile in SQLite database
https://eve.nikr.net/jeveassets/jeveassets-8.0.0-dev2-sqlite.zip

The Details:
Note the old single xml file will persist until the profile is saved for the first time. You can trigger that by updating data:
Start dev build > Update any account data > Exit dev build > Ready for testing

Please test both builds and report what is best for you.
Please also report any bugs you find (do expect bugs), such as missing data etc.

This is very early in the development, but, getting feedback to know if this improve the load time is important before investing time in hardening the code.

Settings

#452

GUI

#451