Add translator and language detector API features (#3758)

* Add `LanguageDetector` API feature
* Add `Translator` API feature

Author: ddbeck

features/languagedetector.yml

@@ -0,0 +1,15 @@
+name: Language detector
+description: >
+  The `LanguageDetector` API identifies the likely natural language that some text is written in.
+  You can use this API to supplement machine translation when the source source language is not known.
+spec: https://webmachinelearning.github.io/translation-api/#language-detector-api
+compat_features:
+  - api.LanguageDetector
+  - api.LanguageDetector.availability_static
+  - api.LanguageDetector.create_static
+  - api.LanguageDetector.destroy
+  - api.LanguageDetector.detect
+  - api.LanguageDetector.expectedInputLanguages
+  - api.LanguageDetector.inputQuota
+  - api.LanguageDetector.measureInputUsage
+# Missing from BCD: http.headers.Permissions-Policy.language-detector

features/languagedetector.yml.dist

@@ -0,0 +1,16 @@
+# Generated from: languagedetector.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+status:
+  baseline: false
+  support:
+    chrome: "138"
+compat_features:
+  - api.LanguageDetector
+  - api.LanguageDetector.availability_static
+  - api.LanguageDetector.create_static
+  - api.LanguageDetector.destroy
+  - api.LanguageDetector.detect
+  - api.LanguageDetector.expectedInputLanguages
+  - api.LanguageDetector.inputQuota
+  - api.LanguageDetector.measureInputUsage

features/translator.yml

@@ -0,0 +1,15 @@
+name: Translator
+description: The `Translator` API translates some text from one natural language to another, using machine translation.
+spec: https://webmachinelearning.github.io/translation-api/#translator-api
+compat_features:
+  - api.Translator
+  - api.Translator.availability_static
+  - api.Translator.create_static
+  - api.Translator.destroy
+  - api.Translator.inputQuota
+  - api.Translator.measureInputUsage
+  - api.Translator.sourceLanguage
+  - api.Translator.targetLanguage
+  - api.Translator.translate
+  - api.Translator.translateStreaming
+# Missing from BCD: http.headers.Permissions-Policy.translator

features/translator.yml.dist

@@ -0,0 +1,18 @@
+# Generated from: translator.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+status:
+  baseline: false
+  support:
+    chrome: "138"
+compat_features:
+  - api.Translator
+  - api.Translator.availability_static
+  - api.Translator.create_static
+  - api.Translator.destroy
+  - api.Translator.inputQuota
+  - api.Translator.measureInputUsage
+  - api.Translator.sourceLanguage
+  - api.Translator.targetLanguage
+  - api.Translator.translate
+  - api.Translator.translateStreaming