Add clangd switch source/header mapping

lua/plugins/20-lsp.lua

@@ -13,8 +13,15 @@ return {
             },
             timeout_ms = 1000,
         },
-        -- mappings to be set up on attaching of a language server
-        mappings = {},
+        mappings = {
+            n = {
+                gh = {
+                    require("clangd_extensions.switch_source_header").switch_source_header,
+                    desc = "Switch to matching source or header file",
+                    cond = "textDocument/switchSourceHeader",
+                },
+            },
+        },
         ---@diagnostic disable: missing-fields
         config = {
             clangd = {

lua/plugins/25-comp.lua

@@ -0,0 +1,23 @@
+---@type LazySpec
+return {
+    {
+        "astronvim/astrocore",
+        opts = {
+            commands = {
+                LuaSnipExitOnModeChange = {
+                    function(evt)
+                        local ok, luasnip = pcall(require, "luasnip")
+                        if
+                            ok
+                            and luasnip.session
+                            and luasnip.session.current_nodes[evt.buf]
+                            and not luasnip.session.jump_active
+                        then
+                            luasnip.unlink_current()
+                        end
+                    end,
+                },
+            },
+        },
+    },
+}