export explicit types

[turadg]

Some @Endo packages export types ambiently. This leads to problems downstream like Agoric/agoric-sdk#4560

Some examples:

• Module '"@endo/promise-kit"' has no exported member 'isPromise'

Instead @Endo packages should export types explicitly as in #1025

• base64
• bundle-source
• captp
• check-bundle
• cjs-module-analyzer
• cli
• compartment-mapper
• daemon
• env-options
• errors
• eslint-plugin
• evasive-transform
• eventual-send
• exo
• far
• import-bundle
• init
• lockdown
• lp32
• marshal
• memoize
• nat
• netstring
• pass-style
• patterns
• promise-kit
• ses
• ses-ava
• ses-integration-test
• skel
• static-module-record
• stream
• stream-node
• stream-types-test
• syrup
• test262-runner
• where
• zip