feat: add rockspec

telescope.nvim is a common dependency across Neovim plugins.
Using luarocks may alleviate the need for users to specify their
plugins' dependencies in their plugin manager.
(e.g., vim-plug or packer).

See also:
https://teto.github.io/posts/2021-09-17-neovim-plugin-luarocks.html

telescope.nvim-scm-1.rockspec

@@ -0,0 +1,43 @@
+local MODREV, SPECREV = "scm", "-1"
+rockspec_format = "3.0"
+package = "telescope.nvim"
+version = MODREV .. SPECREV
+
+description = {
+  summary = "Find, Filter, Preview, Pick. All lua, all the time.",
+  detailed = [[
+  A highly extendable fuzzy finder over lists. 
+  Built on the latest awesome features from neovim core. 
+  Telescope is centered around modularity, allowing for easy customization.
+  ]],
+  labels = { "neovim", "plugin", },
+  homepage = "https://github.com/nvim-telescope/telescope.nvim",
+  license = "MIT",
+}
+
+dependencies = {
+  "lua == 5.1, < 5.4",
+  "plenary.nvim",
+}
+
+source = {
+  url = "http://github.com/nvim-telescope/telescope.nvim/archive/v" .. MODREV .. ".zip",
+}
+
+if MODREV == "scm" then
+  source = {
+    url = "git://github.com/nvim-telescope/telescope.nvim",
+  }
+end
+
+build = {
+  type = "builtin",
+  copy_directories = {
+    "doc",
+    "ftplugin",
+    "plugin",
+    "scripts",
+    "autoload",
+    "data",
+  }
+}