calc-size + interpolate-size WebDX feature use counters + test mappings

This adds:

* a WebFeature use counter for calc-size()
* a WebDXFeature for both calc-size() and interpolate-size
* WPT test mappings for both WebDX features

The WebDX features are described at:
https://web-platform-dx.github.io/web-features-explorer/features/calc-size/
https://web-platform-dx.github.io/web-features-explorer/features/interpolate-size/
and were added in:
web-platform-dx/web-features#2110
web-platform-dx/web-features#2148

Bug: 313072
Change-Id: Id34d234aab6514b514f012688fafc4d6dec1d991
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6024690
Commit-Queue: David Baron <[email protected]>
Reviewed-by: Daniil Sakhapov <[email protected]>
Reviewed-by: Nicolás Peña <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1383940}

Author: dbaron

css/css-values/calc-size/WEB_FEATURES.yml

@@ -0,0 +1,7 @@
+features:
+- name: interpolate-size
+  files:
+  - interpolate-size-*
+- name: calc-size
+  files:
+  - calc-size-*

css/css-values/calc-size/animation/WEB_FEATURES.yml

@@ -0,0 +1,7 @@
+features:
+- name: interpolate-size
+  files:
+  - interpolate-size-*
+- name: calc-size
+  files:
+  - calc-size-*