gnu: go-github-com-charmbracelet-harmonica: Move to golang-xyz.

* gnu/packages/golang.scm (go-github-com-charmbracelet-harmonica): Move
from here ...
* gnu/packages/golang-xyz.scm: ... to here.

Change-Id: I0f20fd7b9916877dff377632ff247b3cac22242e

gnu/packages/golang-xyz.scm

@@ -1874,6 +1874,35 @@ compatible terminals.  You can create your own stylesheet or use one of our
 glamorous default themes.")
     (license license:expat)))
 
+(define-public go-github-com-charmbracelet-harmonica
+  (package
+    (name "go-github-com-charmbracelet-harmonica")
+    (version "0.2.0")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/charmbracelet/harmonica")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "1aasg0c0xxhwav4ivm1mqmsqab6lk407xky8c19pb85r1hdbq0n7"))))
+    (build-system go-build-system)
+    (arguments
+     (list
+      #:import-path "github.com/charmbracelet/harmonica"
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'unpack 'remove-examples
+            (lambda* (#:key import-path #:allow-other-keys)
+              (delete-file-recursively
+               (string-append "src/" import-path "/examples")))))))
+    (home-page "https://github.com/charmbracelet/harmonica")
+    (synopsis "Simple, physics-based animation library")
+    (description
+     "A simple, efficient spring animation library for smooth, natural motion.")
+    (license license:expat)))
+
 (define-public go-github-com-charmbracelet-lipgloss
   (package
     (name "go-github-com-charmbracelet-lipgloss")