Nvim restart (#9)

* chore(nvim): remove astronvim and configs

* feat(nvim): new, custom nvim configuration

config/nvim/lua/plugins/tabnine.lua

@@ -0,0 +1,8 @@
+return {
+  "codota/tabnine-nvim",
+  name = "tabnine",
+  build = vim.loop.os_uname().sysname == "Windows_NT" and "pwsh.exe -file .\\dl_binaries.ps1" or "./dl_binaries.sh",
+  cmd = { "TabnineStatus", "TabnineDisable", "TabnineEnable", "TabnineToggle" },
+  event = "User",
+  opts = { accept_keymap = "<C-e>" },
+}