feat(completion): support termux-share command

share/completions/termux-share.fish

@@ -0,0 +1,28 @@
+set command termux-share
+
+complete -c $command -f
+
+complete -c $command \
+    -s h \
+    -l help \
+    -d 'Show [h]elp'
+
+complete -c $command \
+    -a 'view\tdefault edit send' \
+    -s a \
+    -d 'Specify the [a]ction to perform on a content' \
+    -x
+
+complete -c $command \
+    -a 'text/plain\tdefault' \
+    -s c \
+    -d 'Specify the type of a [c]ontent'
+
+complete -c $command \
+    -s d \
+    -d 'Specify the receiver of a content'
+
+complete -c $command \
+    -s t \
+    -d 'Specify the [t]itle of a content' \
+    -x