Add optional deploy of custom programs (#2817)

* Add optional deploy of custom programs

* Review comments

scripts/cargo-install-custom-programs.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+#
+# This script will install all cargo workspace libraries found in
+# `programDir` as native programs.
+set -e
+
+# Directory to install libraries into
+installDir="$(mkdir -p "$1"; cd "$1"; pwd)"
+
+# Where to find custom programs
+programDir="$2"
+
+(
+  set -x
+  cd "$programDir"
+  cargo build --all --release
+)
+
+for dir in "$programDir"/*; do
+  for program in $programDir/target/release/deps/lib"$(basename "$dir")".{so,dylib,dll}; do
+    if [[ -f $program ]]; then
+      (
+        set -x
+        mkdir -p "$installDir/bin/deps"
+        rm -f "$installDir/bin/deps/$(basename "$program")"
+        cp -v "$program" "$installDir"/bin/deps
+      )
+    fi
+  done
+done