Fix trap Bubble respawn softlock
Resolves !288
When players trapped inside a Trap Bubble respawns, they will be respawned normally but the MF_NOGRAVITY flag won't be removed, because code only removes the flag properly when the player pops the bubble themselves.
That's fixed by using two new variables on the player structure, bubbletrap a mobj_t type that gives easy access to the bubble player is trapped inside, and gotbubbletrapped a boolean type to know if the player got trapped inside a bubble to begin with.
Now it uses player's mobj tracer to keep the mobj reference var and player's carry to know if player got trapped, CR_TRAPBUBBLE is a new carry var, now it should netsynch and get saved in replays normally, as @toaster suggested, thank you!
Changed P_KillPlayer and P_ResetPlayer to NOT reset carry variable to CR_NONE if its set to CR_TRAPBUBBLE so the code works normally.
when player respawns and is read to drop on the floor (in K_HandleDropDash) a check is performed to know if the player got trapped previously and check if the Trap Bubble still exists and player still has MF_NOGRAVITY then it removes the flag and reset the boolean var to make sure player doesnt keep floating in the air because of that.
Since i'm already here, exposed both vars to Lua , both can be read and manipulated.
player->mo->tracer and player->carry are already exposed to lua, the only thing needed to be exposed was the new var, CR_TRAPBUBBLE in deh_tables.c
vanilla 2.3
fixed