fix: Moving the LSP configs out of the Mason file, using the new vim.lsp.config way of configuring LSPs, adding the 'after' config directory for LSP specific configs that override/extend those in the 'lsp' dir and fit with the new configuration way of NVIM 0.11+, moving shortcuts to lspconfig instead of Mason, removing the rename custom function in telescope and using the LSP based function.

nvim/after/lsp/rust_analyzer.lua

@@ -0,0 +1,21 @@
+return {
+    settings = {
+        ['rust_analyzer'] = {
+            check = {
+                command = 'clippy',
+                extraArgs = {
+                    '--',
+                    '-D clippy::all',
+                    '-W clippy::pedantic',
+                    '-W clippy::restriction'
+                },
+            },
+            diagnostics = {
+                enable = true,
+                experimental = {
+                    enable = true,
+                }
+            }
+        }
+    }
+}