Add appdata file

Author: TingPing

data/hexchat-javascript.metainfo.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+	<component type="addon">
+	<metadata_license>CC0-1.0</metadata_license>
+	<project_license>MPL-2.0</project_license>
+	<id>hexchat-javascript</id>
+	<extends>hexchat.desktop</extends>
+	<name>Javascript Interface</name>
+	<summary>Adds support for Javascript scripts to HexChat</summary>
+	<url type="homepage">https://github.com/TingPing/hexchat-javascript</url>
+	<updatecontact>tingping_at_fedoraproject.org</updatecontact>
+</component>
+

makefile

@@ -14,17 +14,24 @@ CXXFLAGS += $(shell $(PKG_CONFIG) --cflags mozjs185) \
 			$(shell $(PKG_CONFIG) --cflags hexchat-plugin)
 LDFLAGS += -shared
 LIBS += $(shell $(PKG_CONFIG) --libs mozjs185)
+
+PREFIX ?= /usr
 OUTFILE := javascript.so
+
 INSTALLDIR := $(DESTDIR)$(shell $(PKG_CONFIG) --variable=hexchatlibdir hexchat-plugin)
+DATADIR := $(DESTDIR)$(PREFIX)/share
 
 all:
 	$(CXX) $(CXXFLAGS) $(LDFLAGS) javascript.cpp -o $(OUTFILE) $(LIBS)
 
 clean:
-	rm $(OUTFILE)
+	rm -f $(OUTFILE)
 
 install:
 	install -m644 -D $(OUTFILE) "$(INSTALLDIR)/$(OUTFILE)"
+	install -m644 "data/hexchat-javascript.metainfo.xml" -t "$(DATADIR)/appdata"
 
 uninstall:
 	rm -f "$(INSTALLDIR)/$(OUTFILE)"
+	rm -f "$(DATADIR)/appdata/hexchat-javascript.metainfo.xml"
+