fix(barbarianfishing): replace isInteracting, add Rs2DropUtils

[runsonmypc]

Summary

• Replace Rs2Player.isInteracting() with isAnimating(timeout) / isMoving() using randomized timeouts via Rs2Random.truncatedGauss for more reliable fishing state detection
• Add shared Rs2DropUtils utility with humanized item dropping — per-session pace seed, log-normal jitter, and sped-up natural mouse during drop sequences
• Fix stale state on plugin restart (reset specReadyTime, specActivated, animationTimeout in run())
• Fix spec activation edge cases: clamp negative gaussRand delays, check setSpecState return value
• Fix inventory full detection: check isFull() before actionCooldownActive so drops aren't blocked by antiban cooldown
• Drop filter now includes roe and caviar byproducts
• Remove dead code: onGameTick() plumbing, duplicate version field, unused timeout field
• Add try-catch around scheduled executor lambda to prevent silent task death
• Add shutDown() null guard for overlay manager (symmetric with startUp())
• Bump plugin version to 1.1.0

Test plan

• Enable Barbarian Fisher plugin and verify fishing starts correctly
• Verify script recovers when fishing spot disappears (no stuck "busy" state)
• Verify inventory drops correctly when full (including roe/caviar)
• Verify drop speed is noticeably faster than stock with natural mouse still moving
• Stop and restart the plugin — verify no stale state issues
• Verify dragon harpoon special attack timing works correctly

[chsami]

I did not merge this because GitHub reports merge conflicts against development. Please resolve the conflicts and rerun checks; after that it can be reviewed for approval/merge. I did not approve while it is in a conflicting state.

[chsami]

Left open for now: this PR currently has merge conflicts against development. Please resolve the conflicts and rerun checks, then it can be reviewed/merged.