Nvim 0.8 based configuration

What's Changed

• Upgrade to Neovim 0.8 configuration by @Nakaoni in #6
• Update lsp by @Nakaoni in #7

Full Changelog: 0.7...0.8

Nvim 0.7 based configuration

This is the tag which follows the Neovim 0.7 version.

Further commit will be for the Neovim 0.8 version