Rust: move qltest to rust code, add options with cargo check

rust/tools/qltest.cmd

@@ -0,0 +1,7 @@
+@echo off
+
+set "RUST_BACKTRACE=full"
+
+type NUL && "%CODEQL_EXTRACTOR_RUST_ROOT%/tools/%CODEQL_PLATFORM%/extractor" --qltest
+
+exit /b %ERRORLEVEL%

rust/tools/qltest.sh

@@ -1,40 +1,7 @@
 #!/bin/bash
 
-mkdir -p "$CODEQL_EXTRACTOR_RUST_TRAP_DIR"
+set -eu
 
 export RUST_BACKTRACE=full
 
-QLTEST_LOG="$CODEQL_EXTRACTOR_RUST_LOG_DIR"/qltest.log
-
-EXTRACTOR="$CODEQL_EXTRACTOR_RUST_ROOT/tools/$CODEQL_PLATFORM/extractor"
-echo > lib.rs
-for src in *.rs; do
-  if [[ "$src" == "lib.rs" ]]; then
-    continue
-  elif [[ "$src" == "main.rs" ]]; then
-    continue
-  else
-    echo "mod ${src%.rs};" >> lib.rs
-  fi
-done
-cat > Cargo.toml << EOF
-[workspace]
-[package]
-name = "test"
-version="0.0.1"
-edition="2021"
-[lib]
-path="lib.rs"
-EOF
-if [[ -f "main.rs" ]]; then
-cat >> Cargo.toml << EOF
-[[bin]]
-name = "main"
-path = "main.rs"
-EOF
-fi
-"$EXTRACTOR" *.rs >> "$QLTEST_LOG"
-if [[ "$?" != 0 ]]; then
-  cat "$QLTEST_LOG" # Show compiler errors on extraction failure
-  exit 1
-fi
+"$CODEQL_EXTRACTOR_RUST_ROOT/tools/$CODEQL_PLATFORM/extractor" --qltest