add snippets for format/panic/log

src/snippets.zig

@@ -21,7 +21,22 @@ pub const top_level_decl_data = [_]Snipped{
     .{ .label = "union tagged", .kind = .Snippet, .text = "const $1 = union(${2:enum}) {$0};" },
     .{ .label = "test", .kind = .Snippet, .text = "test \"$1\" {$0}" },
     .{ .label = "main", .kind = .Snippet, .text = "pub fn main() !void {$0}" },
-    .{ .label = "std_options", .kind = .Snippet, .text = "pub const std_options: std.Options = .{${0}};" },
+    .{ .label = "std_options", .kind = .Snippet, .text = "pub const std_options: std.Options = .{$0};" },
+    .{ .label = "logFn", .kind = .Snippet, .text = 
+    \\fn logFn(
+    \\    comptime level: std.log.Level,
+    \\    comptime scope: @Type(.enum_literal),
+    \\    comptime fmt: []const u8,
+    \\    args: anytype,
+    \\) void {$0}
+    },
+    .{ .label = "panic", .kind = .Snippet, .text = 
+    \\pub fn panic(
+    \\    msg: []const u8,
+    \\    trace: ?*std.builtin.StackTrace,
+    \\    ret_addr: ?usize,
+    \\) noreturn {$0}
+    },
 };
 
 pub const generic = [_]Snipped{
@@ -85,6 +100,14 @@ pub const generic = [_]Snipped{
     .{ .label = "log warn", .kind = .Snippet, .text = "std.log.warn(\"$1\", .{$0});" },
     .{ .label = "log info", .kind = .Snippet, .text = "std.log.info(\"$1\", .{$0});" },
     .{ .label = "log debug", .kind = .Snippet, .text = "std.log.debug(\"$1\", .{$0});" },
+    .{ .label = "format", .kind = .Snippet, .text = 
+    \\pub fn format(
+    \\    self: ${1:@This()},
+    \\    comptime fmt: []const u8,
+    \\    options: std.fmt.FormatOptions,
+    \\    writer: anytype,
+    \\) !void {$0}
+    },
 
     // types
     .{ .label = "anyerror", .kind = .Keyword },