refactor(#2826): remove view debug/cc, enable new codepaths for get_winid and get_bufnr (#3169)

* refactor(#2826): fuller error messages

* refactor(#2826): winnr->winid in view/globals, remove redundant get_winid and get_bufnr calls

* refactor(#2826): winnr->winid consistently

* refactor(#2826): consistent use of buffer registry, tidy, add todos

* refactor(#2826): remove unnecessary view members float, hide_root_folder; use explorer opts

* refactor(#2826): remove unused view members centralize_selection and preserve_window_proportions

* refactor(#2826): remove unused view member height

* refactor(#2826): temporarily reuse BUFNR_PER_TAB in view constructor

* refactor(#2826): get_winid returns new after consistency check

* refactor(#2826): globals.TABPAGES -> WINID_PER_TAB

* refactor(#2826): consistent naming of tabid

* refactor(#2826): more consistency checking

* refactor(#2826): more consistency checking

* refactor(#2826): move global CURSORS to view member

* Revert "refactor(#2826): move global CURSORS to view member"

This reverts commit d84dfad1c3.

* refactor(#2826): move global CURSORS to view member

* refactor(#2826): consistency check returns new

* refactor(#2826): remove consistency checks, enabling new path for view get_winid and get_bufnr

* refactor(#2826): restore CURSORS global

lua/nvim-tree/diagnostics.lua

@@ -185,7 +185,7 @@ function M.update_coc()
 
     local bufnr
     if explorer then
-      bufnr = explorer.view:get_bufnr("diagnostics.update_coc")
+      bufnr = explorer.view:get_bufnr()
     end
 
     local should_draw = bufnr and vim.api.nvim_buf_is_valid(bufnr) and vim.api.nvim_buf_is_loaded(bufnr)