feat(git): add TM git status (#2045)

* feat(git): add `TM` git status

Potential fix for #2043.

* fix: show as staged as well

Author: gegoune

lua/nvim-tree/renderer/components/git.lua

@@ -21,6 +21,7 @@ local function build_icons_table(i)
     ["CM"] = { icons.unstaged },
     [" T"] = { icons.unstaged },
     ["T "] = { icons.staged },
+    ["TM"] = { icons.staged, icons.unstaged },
     ["MM"] = { icons.staged, icons.unstaged },
     ["MD"] = { icons.staged },
     ["A "] = { icons.staged },