Add missing 'mini.nvim' plugins

[echasnovski]

This PR makes list of 'mini.nvim' plugins in 'SUBMITTED-PLUGINS.md' up to date.

[codicocodes]

I'll add these soon, this feature is no longer supported and I need to remove this file. Plugins are now added here: https://dotfyle.com/neovim/plugins/add

You can keep the PR and i'll use it as a reference to add the plugins!

[echasnovski]

I see. It makes more sense now, since I remember seeing some of the missing plugins on the site.

[echasnovski]

I noticed that all plugins mentioned in this PR are added to dotfyle.com. But the newer ones ('mini.snippets' and 'mini.keymap') are missing, although they are listed in 'rockerBOO/awesome-neovim'.

Is https://dotfyle.com/neovim/plugins/add indeed the only way to add new plugins manually? I am not really keen on having to authorize a GitHub app for that.