Halt on errors in build_lib.sh for Catapult, Symbolic and Vivado Accelerator. (#1483)

"set -e" has been already added for other backends.
It allows to print compilations errors, e.g.:
firmware/myproject.h:5:10: fatal error: ac_fixed.h: No such file or directory
    5 | #include <ac_fixed.h>

instead of ignoring them and crashing later, e.g.:
firmware/myproject-0b348075.so: cannot open shared object file: No such file or directory

Author: vasdommes

hls4ml/templates/catapult/build_lib.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
+set -e
 
 CC=g++
 CFLAGS="-O3 -fPIC -std=c++11"

hls4ml/templates/symbolic/build_lib.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
+set -e
 
 CC=g++
 CFLAGS="-O3 -fPIC -std=c++11"

hls4ml/templates/vivado_accelerator/build_lib.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
+set -e
 
 CC=g++
 CFLAGS="-O3 -fPIC -std=c++11"