gnu: go-github-com-bits-and-blooms-bitset: Move to golang-xyz.

* gnu/packages/golang.scm (go-github-com-bits-and-blooms-bitset): Move
from here ...
* gnu/packages/golang-xyz.scm: ... to here.

Change-Id: I2b4b08969f3b5973560e18755dfd34eb280b61d3

gnu/packages/golang-xyz.scm

@@ -1348,6 +1348,31 @@ robin or epsilon greedy mode, and unresponsive hosts are avoided.")
 information and periodically output metrics")
     (license license:expat)))
 
+(define-public go-github-com-bits-and-blooms-bitset
+  (package
+    (name "go-github-com-bits-and-blooms-bitset")
+    (version "1.20.0")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/bits-and-blooms/bitset")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "1m1rk1bf6i1jnhjxm774i3rhg8n8s88a3n5pnhg5a9gf34y7r8az"))))
+    (build-system go-build-system)
+    (arguments
+     (list
+      #:import-path "github.com/bits-and-blooms/bitset"))
+    (home-page "https://github.com/bits-and-blooms/bitset")
+    (synopsis "Bitsets in Go")
+    (description
+     "This package provides a Go implementation of bitsets, which are a
+mapping between non-negative integers and boolean values focused on efficient
+space usage.")
+    (license license:bsd-3)))
+
 (define-public go-github-com-blang-semver
   (package
     (name "go-github-com-blang-semver")