Adds DOCX and Markdown export functionality

Introduces a modular exporter pattern supporting DOCX and Markdown formats
by implementing Exporter interfaces and restructuring application logic.

Enhances CI to install UPX for binary compression, excluding recent macOS
binaries due to compatibility issues.

Enables CGO when building binaries for all platforms, addressing potential
cross-platform compatibility concerns.

Bumps version to 0.1.1.

scripts/build.sh

@@ -315,7 +315,7 @@ for idx in "${!TARGETS[@]}"; do
         fi
         build_cmd+=("${GO_BUILD_FLAGS_ARRAY[@]}" -o "$OUTDIR/$BIN" "$ENTRYPOINT")
 
-        if GOOS="$os" GOARCH="$arch" "${build_cmd[@]}" 2>"$OUTDIR/$BIN.log"; then
+        if CGO_ENABLED=1 GOOS="$os" GOARCH="$arch" "${build_cmd[@]}" 2>"$OUTDIR/$BIN.log"; then
             update_status $((idx + 1)) '✔' "$BIN done"
             rm -f "$OUTDIR/$BIN.log"
         else