mechanism to allow specifing file editing capability

By adding actions="view|edit" to mime/mediatype pixiewood will also add
the EDIT action to the intent handler for that particular mimetype.

This is not specified in the appstream metadata format, but appstreamcli
doesn't check for parameters so it works for now.
I hope to have that behviour codified in appstream at some point.
See ximion/appstream#689

generate/manifest.xsl

@@ -38,11 +38,14 @@
 						<category android:name="android.intent.category.LAUNCHER" />
 					</intent-filter>
 					<xsl:for-each select="pw:metainfo/meta:component/meta:provides/meta:mediatype | pw:metainfo/meta:component/meta:mimetypes/meta:mimetype">
+						<xsl:variable name="actions" select="str:split(@actions, '|')" />
 						<intent-filter>
 							<action android:name="android.intent.action.VIEW"/>
-							<!-- if mime is editable: action.EDIT -->
+							<xsl:if test="boolean($actions[. = 'edit'])">
+								<action android:name="android.intent.action.EDIT"/>
+							</xsl:if>
 							<category android:name="android.intent.category.DEFAULT"/>
-							<!-- if should be browsable: category.BROWSABLE + scheme http+https -->
+							<!-- TODO: how to do browsable intents?: category.BROWSABLE + scheme http+https -->
 							<data android:scheme="content"/>
 							<data android:scheme="file"/>
 							<data android:mimeType="{.}" />