Election for Vladimir Piskarev as Committer on Eclipse LSP4J

Vladimir recently started contributing to the Eclipse LSP4J team and has already made an impact on the project.

They have addressed the following bugs:
- #479 ProgressParams supports work done progress only
- #480 Update ServerCapabilities to support work done progress
- #481 Inconsistencies in *RegistrationOptions
- #484 Ambiguous Either type when parsing unresolved code action

They have also reviewed other items and provided general feedback on developer flow, for example in #199 On first opening or cleaning projects non-modified files are showing up with changes

Vladimir is also the project lead of Eclipse Handly (https://www.eclipse.org/handly), and has had an opportunity to learn the EDP. He is also maintainer of LXTK (https://github.com/lxtk-org/lxtk) which is also a heavy consumer of LSP and the LXTK project is based on LSP4J and has therefore a vested interest in securing further development and maintenance of LSP4J.

For these reasons and the long-term outlook for their involvement on the
team, it is my pleasure to nominate Vladimir as a committer on Eclipse LSP4J.