A command to specify any date and navigate to or create daily notes

### 🚀 The feature, motivation and pitch

Currently Obsidian.nvim has the `:ObsidianToday` and `:ObsidianYesterday` commands which open or create daily notes, but there are none (at least I found) that can do so for any given date. `:ObsidianDailies` doesn't seem to be able to create notes. There should be a command like `:ObsidianDaily 2024 9 28` . and use natural language parsing to make it flexiable, like "the 2nd [of the month]" or "last friday"

### Alternatives

_No response_

### Additional context

_No response_

Start by reading the implementations and command registration for :ObsidianToday, :ObsidianYesterday, and :ObsidianDailies. Define how an explicit date and natural-language input should be parsed, then verify that the command can open or create the corresponding daily note for each supported form.

Written by the indexing model from the issue text.