Add linear-nvim

Kinda bare-bones plugin right now, but why not

lua/plugins/linear.lua

@@ -0,0 +1,47 @@
+return {
+  {
+    "rmanocha/linear-nvim",
+    dependencies = {
+      "nvim-lua/plenary.nvim",
+      "nvim-telescope/telescope.nvim",
+      "stevearc/dressing.nvim",
+    },
+    config = function()
+      require("linear-nvim").setup()
+    end,
+    keys = {
+      {
+        "<leader>mm",
+        function()
+          require("linear-nvim").show_assigned_issues()
+        end,
+        mode = "n",
+        desc = "Linear: show assigned issues",
+      },
+      {
+        "<leader>mc",
+        function()
+          require("linear-nvim").create_issue()
+        end,
+        mode = "v",
+        desc = "Linear: create issue from selected text",
+      },
+      {
+        "<leader>mc",
+        function()
+          require("linear-nvim").create_issue()
+        end,
+        mode = "n",
+        desc = "Linear: create issue",
+      },
+      {
+        "<leader>ms",
+        function()
+          require("linear-nvim").show_issue_details()
+        end,
+        mode = "n",
+        desc = "Linear: show issue details",
+      },
+    },
+  },
+}