Make it possible to define your own tailwind settings in opts, and merge
them with the default, additional Phoenix settings in tailwind.lua
## Description
Add the possibility to add your own tailwind settings in opts and have
them deep merged into the default `opts.settings`
I needed this for configuring support for tailwind when coding on a
[htmgo](https://htmgo.dev/docs/misc/tailwind-intellisense) project in
Neovim.
E.g.
```lua
return {
"neovim/nvim-lspconfig",
opts = {
servers = {
tailwindcss = {
filetypes_include = { "go" },
settings = {
tailwindCSS = {
includeLanguages = {
go = "html",
},
experimental = {
classRegex = {
{ "Class\\(([^)]*)\\)", '["`]([^"`]*)["`]' },
{ "ClassX\\(([^)]*)\\)", '["`]([^"`]*)["`]' },
{ "ClassIf\\(([^)]*)\\)", '["`]([^"`]*)["`]' },
{ "Classes\\(([^)]*)\\)", '["`]([^"`]*)["`]' },
},
},
},
},
},
},
},
}
```
## Checklist
- [x] I've read the
[CONTRIBUTING](https://github.com/LazyVim/LazyVim/blob/main/CONTRIBUTING.md)
guidelines.
## Description
Makes it easier to disable it for users who want to try other completion
engines, without it being pulled back by some Extra.
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## Related Issue(s)
None
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## Screenshots
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## Checklist
- [x] I've read the
[CONTRIBUTING](https://github.com/LazyVim/LazyVim/blob/main/CONTRIBUTING.md)
guidelines.
