chore: adding postcss and swc to optional peerDependencies

fix: update `source-map` to 0.8.0-beta.0, closes egoist#623

the `source-map` package is broken in Node.js 18, it was fixed but the beta version was never released

see mozilla/source-map#454

chore: update release command

fix(dts): use relative `baseUrl` in tsconfig, closes egoist#611

fix: Exit Code returns 0 for failed builds, closes egoist#606

fix: make sure `sources` are relative path in sourcemap, closes egois…

…t#603

wait a minute

fix: build promise resolves before types are emitted (egoist#597)

Co-authored-by: hanyue.ph <hanyue.ph@cainiao.com>
Co-authored-by: EGOIST <0x142857@gmail.com>

fix(regression): `entry` gets ignored if it is an object, closes egoi…

…st#583

fix: exclude `banner` and `footer` in the options for rollup