feat: add an UI option to ignore conceal warnings

[nobe4]

In https://github.com/epwalsh/obsidian.nvim/issues/286#issuecomment-2048334358 it was suggested that a new config could be added to specifically not warn if the conceal level is 0 and the UI is enabled.

This commit does this and guard against the conceal warning when the option is set.

cc https://github.com/epwalsh/obsidian.nvim/issues/492

[kmac]

I would love to see this go in. I do want the UI decorations that are applied with obsidian, but I really don't like having conceallevel > 0

[kmac]

@nobe4 I'm not sure if you've seen, but this repo was forked into https://github.com/obsidian-nvim/obsidian.nvim

I'm wondering if you might be up for re-submitting the PR there? It's fairly active now.

I'm working around this by manually editing out the warning, but it's a pain to update via Lazy like this.

[nobe4]

Good point! I'll open it over there

[nobe4]

@kmac => https://github.com/obsidian-nvim/obsidian.nvim/pull/177