pkg(nixvim): Add blink-cmp, lazydev, mini-ai, mini-pairs and ts-comments plugins to improve coding UX

pkgs/nixvim/coding/blink-cmp.nix

@@ -0,0 +1,55 @@
+{...}: {
+  youthlic.plugins.blink-cmp = {
+    enable = true;
+    setupLspCapabilities = true;
+    settings = {
+      snippets = {
+        expand = {
+          __raw =
+            #lua
+            ''
+              function(snippet, _)
+                return {}
+              end
+            '';
+        };
+      };
+      appearance = {
+        # use_nvim_cmp_as_default = false;
+      };
+      completion = {
+        accept = {
+          auto_brackets = {
+            enabled = true;
+          };
+        };
+        menu = {
+          draw = {
+            treesitter = ["lsp"];
+          };
+        };
+        documentation = {
+          auto_show = true;
+          auto_show_delay_ms = 200;
+        };
+        ghost_text = {
+          enabled = {
+            __raw =
+              #lua
+              ''vim.g.ai_cmp'';
+          };
+        };
+      };
+      sources = {
+        compat = [];
+        default = ["lsp" "path" "snippets" "buffer"];
+      };
+      cmdline = {
+        enabled = false;
+      };
+      keymap = {
+        preset = "enter";
+      };
+    };
+  };
+}