Provide development Foundry profile that doesn't use `--via-ir`

[PaulRBerg]

Making contributions to this repo is difficult because recompiling the contracts takes a long time, which is due to using --via-ir:

https://github.com/Uniswap/permit2/blob/bbbc92f895049ca45c4b25a450f9d3e907659284/foundry.toml#L5

To improve the UX, consider providing a development-only Foundry profile that does not use --via-ir (and potentially disables the optimizer, too), by following the approach discussed here:

• https://github.com/ProjectOpenSea/seaport/discussions/808
• https://twitter.com/PaulRBerg/status/1610229563128152064

Besides Seaport, there is an example of this kind of setup in my PRBProxy project:

• https://github.com/PaulRBerg/prb-proxy/blob/0b33e550bfd3c9264ccac22289745012a1b1b92d/foundry.toml (see default and lite)
• https://github.com/PaulRBerg/prb-proxy/blob/0b33e550bfd3c9264ccac22289745012a1b1b92d/test/Base.t.sol#L170-L182