docs(lua): move function docs to lua files

runtime/lua/vim/_meta/misc.lua

@@ -0,0 +1,11 @@
+---@meta
+
+--- Invokes |vim-function| or |user-function| {func} with arguments {...}.
+--- See also |vim.fn|.
+--- Equivalent to:
+--- <pre>lua
+---     vim.fn[func]({...})
+--- </pre>
+--- @param func fun()
+--- @param ... any
+function vim.call(func, ...) end