extract project root env var export to env.sh and add asset gen script

scripts/app_config/shared/asset_generators.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -x -e
+
+source ./env.sh
+
+# run icon and image generators
+pushd "${APP_PROJECT_ROOT_DIR}"
+flutter pub get
+dart run flutter_native_splash:create
+dart run flutter_launcher_icons
+popd

scripts/app_config/shared/link_assets.sh

@@ -2,6 +2,8 @@
 
 set -x -e
 
+source ./env.sh
+
 if [ $# -ne 1 ]; then
     echo "Usage: $0 <theme specific assets dir name (ex. stack_wallet)>"
     exit 1
@@ -22,8 +24,5 @@ ln -s "${ASSET_SOURCES_DIR}/bundled_themes/${SELECT_ASSETS_DIR}" "${ASSETS_DIR}/
 rm -f "${ASSETS_DIR}/icon"
 ln -s "${ASSET_SOURCES_DIR}/icon/${SELECT_ASSETS_DIR}" "${ASSETS_DIR}/icon"
 
-
+# run icon and image generators
-
+"${APP_PROJECT_ROOT_DIR}/scripts/app_config/shared/asset_generators.sh"
-
-# todo run flutter_native_splash
-# todo run flutter_launcher_icons

scripts/build_app.sh

@@ -2,11 +2,7 @@
 
 set -x -e
 
-# set project root
+source ./env.sh
-THIS_SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
-pushd "${THIS_SCRIPT_DIR}/../"
-export APP_PROJECT_ROOT_DIR="$(pwd)"
-popd
 
 APP_PLATFORMS=("android" "ios" "macos" "linux" "windows")
 APP_NAMED_IDS=("stack_wallet" "stack_duo")

scripts/env.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+set -x -e
+
+# set project root
+THIS_SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+pushd "${THIS_SCRIPT_DIR}/../"
+export APP_PROJECT_ROOT_DIR="$(pwd)"
+popd