Add executable models and tools to download and build them

tools/obtain-all-executables.bash

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+CMD="$(dirname "$(realpath "$0")")/obtain-executable.bash"
+
+# Download the two models and save them in the models directory
+
+"$CMD" minimal-viable-alteration models/minimal-viable-alteration
+"$CMD" stick-probability models/stick-probability

tools/obtain-executable.bash

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+#!/usr/bin/env bash
+
+GIT_REF=$1
+OUTPUT_PATH=$(realpath "$2")
+
+# Checkout in a temp directory so not to clutter anything out
+cd "$(mktemp -d)" || exit
+git clone ssh://git@git.joshuacoles.me:2222/joshuacoles/compb-dla-model.git .
+git checkout "$GIT_REF"
+
+# Clean and then build
+make clean && make all
+
+# Copy final executable to the specified output
+cp ./run "$OUTPUT_PATH"