feat(plugins): add Blink supermaven, external TUI, and heirline statusline plugins

lua/plugins/blink-supermaven.lua

@@ -0,0 +1,26 @@
+-- Native supermaven source for blink.cmp (mirrors the astrocommunity blink-copilot pattern).
+-- Inline ghost text + <C-l> accept come from `astrocommunity.completion.supermaven-nvim`;
+-- this additionally surfaces supermaven suggestions in the blink menu so <Tab>/<CR> work.
+return {
+  "Huijiro/blink-cmp-supermaven",
+  lazy = true,
+  specs = {
+    {
+      "saghen/blink.cmp",
+      optional = true,
+      opts = {
+        sources = {
+          default = { "supermaven" },
+          providers = {
+            supermaven = {
+              name = "supermaven",
+              module = "blink-cmp-supermaven",
+              score_offset = 100,
+              async = true,
+            },
+          },
+        },
+      },
+    },
+  },
+}