Add METADATA / Licensing info

Change-Id: I63d2ccf3812fc86e1eb4864c12b7c40a0b695628

LICENSE

+LICENSE-APACHE
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METADATA

+name: unicode-width
+description: "Determine displayed width of `char` and `str` types according to Unicode Standard Annex #11 rules."
+third_party {
+  url {
+    type: HOMEPAGE
+    value: "https://crates.io/crates/unicode-width"
+  }
+  url {
+    type: GIT
+    value: "https://github.com/unicode-rs/unicode-width"
+  }
+  version: "0.1.7"
+  license_type: NOTICE
+  last_upgrade_date {
+    year: 2020
+    month: 5
+    day: 6
+  }
+}
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NOTICE

+LICENSE
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