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/marksman.lua

@@ -0,0 +1,3 @@
+return {
+    filetypes = { 'md', 'markdown', 'telekasten' }
+}