fix: shell scripts (#7186)

* fix: bash scripts

* pr feedback

* wrong variable

* ci: add shellcheck workflow

* fix: missing scripts

machine-learning/ann/build.sh

@@ -1 +1,3 @@
-g++ -shared -O3 -o libann.so -fuse-ld=gold -std=c++17 -I$ARMNN_PATH/include -larmnn -larmnnDeserializer -larmnnTfLiteParser -larmnnOnnxParser -L$ARMNN_PATH ann.cpp
+#!/usr/bin/env sh
+
+g++ -shared -O3 -o libann.so -fuse-ld=gold -std=c++17 -I"$ARMNN_PATH"/include -larmnn -larmnnDeserializer -larmnnTfLiteParser -larmnnOnnxParser -L"$ARMNN_PATH" ann.cpp

machine-learning/ann/export/build-converter.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 
-cd armnn-23.11/
+cd armnn-23.11/ || exit
 g++ -o ../armnnconverter -O1 -DARMNN_ONNX_PARSER -DARMNN_SERIALIZER -DARMNN_TF_LITE_PARSER -fuse-ld=gold -std=c++17 -Iinclude -Isrc/armnnUtils -Ithird-party -larmnn -larmnnDeserializer -larmnnTfLiteParser -larmnnOnnxParser -larmnnSerializer -L../armnn src/armnnConverter/ArmnnConverter.cpp

machine-learning/start.sh

@@ -1,6 +1,7 @@
 #!/usr/bin/env sh
 
-export LD_PRELOAD="/usr/lib/$(arch)-linux-gnu/libmimalloc.so.2"
+lib_path="/usr/lib/$(arch)-linux-gnu/libmimalloc.so.2"
+export LD_PRELOAD="$lib_path"
 export LD_BIND_NOW=1
 
 : "${MACHINE_LEARNING_HOST:=0.0.0.0}"
@@ -10,8 +11,8 @@ export LD_BIND_NOW=1
 
 gunicorn app.main:app \
 	-k app.config.CustomUvicornWorker \
-	-w $MACHINE_LEARNING_WORKERS \
-	-b $MACHINE_LEARNING_HOST:$MACHINE_LEARNING_PORT \
-	-t $MACHINE_LEARNING_WORKER_TIMEOUT \
+	-w "$MACHINE_LEARNING_WORKERS" \
+	-b "$MACHINE_LEARNING_HOST":"$MACHINE_LEARNING_PORT" \
+	-t "$MACHINE_LEARNING_WORKER_TIMEOUT" \
 	--log-config-json log_conf.json \
 	--graceful-timeout 0