Switch to preconstruct for packages dev and build

[alecdwm]

[alecdwm]

Some notes so far on the conversion:

• converted the balances-demo from CRA to vite with tailwind, there's nothing important going on in the diffs inside that directory
• had to upgrade rxjs to the same version as used inside polkadot.js/api to fix a type error
• needed to move our config packages into a separate directory so that preconstruct doesn't try (and fail!) to compile them with babel
• needed to add @babel/plugin-proposal-decorators to our babel config and apply it to the monorepo packages so that they could be compiled by babel (previously they were compiled by tsc)
• talisman-ui wasn't compiling and from the error it had it looked like it was struggling to parse the classNames function, so I just moved that into our util package.
  but I think the underlying cause for the error was actually the svg parsing, which I had to then fix afterwards anyway.
  I left the classNames change in because I think it makes sense for it to be in the common util package anyway
• i had to fork preconstruct in order to get it to compile the svg files in talisman-ui. the issue to track the upstreaming of my changes is here
• some packages were missing deps in their package.json, preconstruct throws errors when this happens so I added them in
• require is not bundled by preconstruct, so I had to change the loggers to import their package.json names instead
• preconstruct doesn't let us build individual packages, only the whole thing as a collection - so we can't take advantage of turborepo's caching on an individual package basis

[0xKheops]

LGTM! top tier PR!

[alecdwm]

Pushed one more change, I realised I could avoid doing those global declares by importing from @talismn/balances/plugins instead of ../plugins inside the @talismn/balances package.
And doing so actually reduces the number of lines changed by the PR! 😄

[alecdwm]

and now rebased off of latest dev ✨

[chidg]

LGTM