Build helix with a default runtime location and copy runtime into correct spot

files/scripts/install-helix.sh

@@ -10,9 +10,9 @@ cd /src/
 git clone https://github.com/helix-editor/helix.git
 cd helix
 
-RUSTFLAGS="-C target-feature=-crt-static"
-cargo install --path helix-term
+export HELIX_DEFAULT_RUNTIME=/usr/lib/helix/runtime
+cargo build --profile opt --locked
 
 mkdir -p /out/
-mv $CARGO_HOME/bin/hx /out/hx
+mv target/opt/hx /out/hx
 mv runtime /out/