Add browser extension gRPC bridge

Makefile

@@ -25,7 +25,7 @@ ifneq ($(strip $(SIGNPASS)),)
 GOGIO_SIGN_FLAGS += -signpass $(SIGNPASS)
 endif
 
-.PHONY: apk archlinux-pkgbuild
+.PHONY: apk archlinux-pkgbuild browser-bridge
 apk: android/keepassgo-android.jar
 	@test -x "$(JAVA_HOME)/bin/java" || { echo "JAVA_HOME must point to a working JDK install"; exit 1; }
 	@test -d "$(ANDROID_SDK_ROOT)" || { echo "ANDROID_SDK_ROOT must point to an Android SDK install"; exit 1; }
@@ -68,3 +68,6 @@ archlinux-pkgbuild: $(ARCH_PKG_TMPL) Makefile
 		-e 's|@PKGVER@|$(ARCH_PKGVER)|g' \
 		-e 's|@REPO_DIR@|$(ARCH_REPO_DIR)|g' \
 		"$(ARCH_PKG_TMPL)" > "$(ARCH_PKGBUILD)"
+
+browser-bridge:
+	go build ./cmd/keepassgo-browser-bridge