Add fortls (#35455)

* fortls

* Update var/spack/repos/builtin/packages/py-fortls/package.py

* review

* Update var/spack/repos/builtin/packages/py-fortls/package.py

Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>

* fixes

* review

---------

Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>

var/spack/repos/builtin/packages/py-fortls/package.py

@@ -0,0 +1,26 @@
+# Copyright 2013-2023 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class PyFortls(PythonPackage):
+    """A Language Server for Fortran providing code completion, diagnostics, hovering and more."""
+
+    homepage = "https://fortls.fortran-lang.org"
+    pypi = "fortls/fortls-2.13.0.tar.gz"
+
+    maintainers("RMeli")
+
+    version("2.13.0", sha256="23c5013e8dd8e1d65bf07be610d0827bc48aa7331a7a7ce13612d4c646d0db31")
+
+    depends_on("py-setuptools@45:", type="build")
+    depends_on("py-packaging", type=("build", "run"))
+    depends_on("py-setuptools-scm@6.2:+toml", type="build")
+    depends_on("py-setuptools-scm-git-archive", type="build")
+
+    depends_on("py-json5", type=("build", "run"))
+    depends_on("py-importlib-metadata", type=("build", "run"), when="^python@:3.7")
+    depends_on("py-typing-extensions", type=("build", "run"), when="^python@:3.7")