update verilog.snippets

1. update module snippet so module name is the filename by default
2. add tdsp (typedef struct packed) snippet 
3. add tdf (typedef eum) snippet

Author: bakerray

snippets/verilog.snippets

@@ -58,7 +58,7 @@ snippet al
 	end
 # Module block
 snippet mod
-	module ${1:module_name} (${2});
+	module ${1:`vim_snippets#Filename('$1', 'name')`} (${2});
 		${0}
 	endmodule
 # For
@@ -86,3 +86,14 @@ snippet ini
 	initial begin
 		${0}
 	end
+# typedef struct packed
+snippet tdsp
+	typedef struct packed {
+		int ${2:data};
+	} ${1:`vim_snippets#Filename('$1_t', 'name')`};
+# typedef eum
+snippet tde
+	typedef enum ${2:logic[15:0]}
+	{
+		${3:REG = 16'h0000}
+	} ${1:my_dest_t};