indicators: new package (#47786)

* indicators: new package

Indicators is a new package which aims to add easy-to-use progress bars
to modern C++.

* Update header

* Update dependencies

var/spack/repos/builtin/packages/indicators/package.py

@@ -0,0 +1,32 @@
+# Copyright Spack Project Developers. See COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+
+from spack.package import *
+
+
+class Indicators(CMakePackage):
+    """Activity indicators for modern C++."""
+
+    homepage = "https://github.com/p-ranav/indicators"
+    url = "https://github.com/p-ranav/indicators/archive/refs/tags/v2.3.tar.gz"
+    list_url = "https://github.com/p-ranav/indicators/tags"
+    git = "https://github.com/p-ranav/indicators.git"
+
+    maintainers("stephenswat")
+
+    license("MIT", checked_by="stephenswat")
+
+    version("2.3", sha256="70da7a693ff7a6a283850ab6d62acf628eea17d386488af8918576d0760aef7b")
+
+    depends_on("cxx", type="build")
+    depends_on("cmake@3.8:", type="build")
+
+    def cmake_args(self):
+        args = [
+            self.define("INDICATORS_BUILD_TESTS", self.run_tests),
+            self.define("INDICATORS_SAMPLES", False),
+            self.define("INDICATORS_DEMO", False),
+        ]
+        return args