Be sure to emit an event in the initialize function
for the changes to the properties that the op-node cares
about. This will ensure that the op-node's view of the
system config is never corrupted. Without this change,
an accidental reinitialize where the values are changed
could result in this happening. Add events to prevent
this from happening. This is done by making internal functions
that are not `onlyOwner` and using those internal functions
in `initialize`.

Bump the version of the system config a minor version.

feat(indexer): Add tokens to the db schema

contracts-bedrock: upgrade to multichain script

Web3.js Plugin for Fee Estimation

contracts-bedrock: slight cleanup + docs

feat(indexer): Add basic docs

Co-authored-by: Will Cory <willcory10@gmail.com>

Co-authored-by: Will Cory <willcory10@gmail.com>