lots of changes

- changed music command
- added music to backup
- showmethekey more window rules
- added mpv config
- added seahorse to all reqs
- nvim
    - added render markdown
    - added treesitter. ive been using just my systems treesitter.
    - fixed undotree bind
    - removed eldritch theme. it broke

env/.config/nvim/after/plugin/treesitter.lua

@@ -0,0 +1,7 @@
+local ok, treesitter = pcall(require, 'nvim-treesitter.configs')
+if ok then
+    treesitter.setup {
+        ensure_installed = { "c", "lua", "rust", "css", "html", "bash", "markdown", "markdown_inline" },
+        highlight = { enable = true, },
+    }
+end