Anshar

Changelog:

• Beacon and End Crystal particle effects are moved to clientside.
• Some dimension checks in frequency network code
• Improvement to existing commands and a new debug ones
• Fixed End Crystal crash when used as a regular End Crystal (oops)
• New logic for disembarking: players now get sent through light-passing blocks (same that beacon beam can pass through), but only if there's 2 block space to place the player
• End Crystal linking/placing works in Adventure Mode now