2.35.0 - JT Beta core support. Self update cli command

When running via the cli, don't force update checks (except when using the menu)
Prep for jt beta cores being managed via the api
new cli option update-self

What's Changed

• skip cores that require jtbeta key by @mattpannella in #173
• skip save files by @mattpannella in #184
• rename sponsor flag to requires_license by @mattpannella in #185
• update-self cli command by @mattpannella in #186

Full Changelog: 2.34.0...2.35.0