Map more directories to web-features (using WEB_FEATURES.yml) (#43365)

diff --git a/avif/WEB_FEATURES.yml b/avif/WEB_FEATURES.yml
new file mode 100644
index 0000000..9e19a42
--- /dev/null
+++ b/avif/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: avif
+  files: "**"
diff --git a/fullscreen/WEB_FEATURES.yml b/fullscreen/WEB_FEATURES.yml
new file mode 100644
index 0000000..0a2878c
--- /dev/null
+++ b/fullscreen/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: fullscreen
+  files: "**"
diff --git a/html/semantics/popovers/WEB_FEATURES.yml b/html/semantics/popovers/WEB_FEATURES.yml
new file mode 100644
index 0000000..e1b9f82
--- /dev/null
+++ b/html/semantics/popovers/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: popover
+  files: "**"
diff --git a/navigation-api/WEB_FEATURES.yml b/navigation-api/WEB_FEATURES.yml
new file mode 100644
index 0000000..3516e95
--- /dev/null
+++ b/navigation-api/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: navigation
+  files: "**"
diff --git a/scheduler/WEB_FEATURES.yml b/scheduler/WEB_FEATURES.yml
new file mode 100644
index 0000000..4b5218b
--- /dev/null
+++ b/scheduler/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: scheduler
+  files: "**"
diff --git a/webcodecs/WEB_FEATURES.yml b/webcodecs/WEB_FEATURES.yml
new file mode 100644
index 0000000..89681db
--- /dev/null
+++ b/webcodecs/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: webcodecs
+  files: "**"
diff --git a/webdriver/tests/bidi/WEB_FEATURES.yml b/webdriver/tests/bidi/WEB_FEATURES.yml
new file mode 100644
index 0000000..a3af747
--- /dev/null
+++ b/webdriver/tests/bidi/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: webdriver-bidi
+  files: "**"
diff --git a/webusb/WEB_FEATURES.yml b/webusb/WEB_FEATURES.yml
new file mode 100644
index 0000000..5f1fff3
--- /dev/null
+++ b/webusb/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: webusb
+  files: "**"
diff --git a/webvtt/WEB_FEATURES.yml b/webvtt/WEB_FEATURES.yml
new file mode 100644
index 0000000..5b5544d
--- /dev/null
+++ b/webvtt/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: webvtt
+  files: "**"