Add a changelog entry

Author: L-TChen

changelog.d/issue-701

@@ -0,0 +1,11 @@
+synopsis: Add `licenseFiles` to `InstalledPackageInfo`
+packages: Cabal-syntax, Cabal
+prs: #9172
+issues: #701
+
+description: {
+
+- A new field `licenseFiles` is added to `InstalledPackageInfo` to track their locations.
+- The field `licenseFiles` is pretty printed as `license-files` canonically.
+
+}