feat(ox_core/convars): hospitalBlips convar (#260)

Signed-off-by: Maximus7474 <94017712+Maximus7474@users.noreply.github.com>

Author: Maximus7474

pages/ox_core.mdx

@@ -106,6 +106,9 @@ These convars should use the `setr` command to be read by clients.
 - `ox:deathSystem`
   - Default: `true`
   - Enables the built-in death and respawn system. When disabled the `isDead` player state will still be set to `true` and the `ox:playerDeath` event will be triggered.
+- `ox:hospitalBlips`
+  - Default: `true`
+  - Enables the hospital blips used when reviving with the default deathSystem.
 - `ox:characterSelect`
   - Default: `true`
   - Enables built-in character registration, and uses that character when joining.