I replace the brake booster now it will not shift out park

troubles at lights may very well mean a vacuum leak from a faulty brake booster
test by stopping and then applying the park brake and taking your foot of the brake pedal
you can do this test in the garage
start the engine , apply the park brake , place in drive
if it idles alright , put you foot on the brake
if it plays up , replace the brake booster

no sounds like shift cable is binding shoud replace

Brake Switch somehow got out of adjustment
with the brake booster install.

Now you don't have that signal to the computer
to release the shift solenoid,sloppy work

Did you disconnect the brake light switch or accidentally bumped it? Perhaps forgot to reconnect it and before you can shift out of park it needs to see a signal from the brake witch and since the signal isn't there it's not allowing you to shift.

Not sure I am following your question, or maybe questions.
If you can not shift out of park with the key on, the brake switch on the pedal may be faulty or out of adjustment.
If the warning light is on, it could be the fluid level sensor in the master cylinder, or the parking brake switch.
If you have no brakes after you try bleeding the master cylinder, the rod inside the booster may not be connected correctly. If you replaced the master cylinder along with the booster, you would need to bench bleed the master before installing it in the truck.

Sounds like the brake pedal is out of adjustment to the brake light switch. The brake light switch sends power to the solenoid that locks the shifter in park.
Check the switch.

near the booster at the fire wall is the linkage when you changed the booster i'm guessing you hit the rods or knocked it off

the parking pawl might be stuck, try to push the truck foward while someone trys to shift out of park

The hissing noise could be the power brake booster leaking vacuum. The inability to shift out of park is likely to be a bad SHIFTER INTERLOCK SWITCH attached to the brake pedal under the dash.

You can remove the interlock off the gear shift or maybe spray some crc on it otherwise probably a loose wire or switch