scouting: Fix naming of assemble_static_files rule

Originally, we only had pictures in that rule so naming the attribute
`pictures` made sense. But now we have a bunch of other kinds of files
in there. Let's rename it to `srcs` to be more consistent with other
rules.

Change-Id: Ie53f6cd040db311241807c3acee0ac6d4dbd0875
Signed-off-by: Philipp Schrader <philipp.schrader@gmail.com>
diff --git a/scouting/www/BUILD b/scouting/www/BUILD
index 46742e3..685fe14 100644
--- a/scouting/www/BUILD
+++ b/scouting/www/BUILD
@@ -42,12 +42,12 @@
 
 assemble_static_files(
     name = "static_files",
-    app_files = ":app",
-    pictures = [
-        "//third_party/y2024/field:pictures",
-        ":ngsw-worker.js",
+    srcs = [
         ":ngsw.json",
+        ":ngsw-worker.js",
+        "//third_party/y2024/field:pictures",
     ],
+    app_files = ":app",
     replace_prefixes = {
         "prod": "",
         "dev": "",
diff --git a/scouting/www/defs.bzl b/scouting/www/defs.bzl
index e7fb44a..86095d7 100644
--- a/scouting/www/defs.bzl
+++ b/scouting/www/defs.bzl
@@ -10,7 +10,7 @@
         dst = out_dir,
         name = ctx.label.name,
         copy_to_directory_bin = copy_to_directory_bin,
-        files = ctx.files.pictures + ctx.attr.app_files.files.to_list(),
+        files = ctx.files.srcs + ctx.attr.app_files.files.to_list(),
         replace_prefixes = ctx.attr.replace_prefixes,
     )
 
@@ -25,7 +25,7 @@
         "app_files": attr.label(
             mandatory = True,
         ),
-        "pictures": attr.label_list(
+        "srcs": attr.label_list(
             mandatory = True,
             allow_files = True,
         ),