Add more PSE supported project to `oss-directory`

[baumstern]

project registry: https://github.com/opensource-observer/oss-directory

projects: cursive

• https://github.com/cursive-team/ maci
• https://github.com/privacy-scaling-explorations/maci
• https://github.com/privacy-scaling-explorations/maci-rpgf zk-kit
• https://github.com/privacy-scaling-explorations/zk-kit
• https://github.com/privacy-scaling-explorations/zk-kit.circom
• https://github.com/privacy-scaling-explorations/zk-kit.noir
• https://github.com/privacy-scaling-explorations/zk-kit.solidity trustedsetup/p0tion/
• https://github.com/privacy-scaling-explorations/p0tion
• https://github.com/privacy-scaling-explorations/DefinitelySetup
• https://github.com/privacy-scaling-explorations/perpetualpowersoftau

mpz

• https://github.com/privacy-scaling-explorations/mpz

ESIM https://github.com/Blockchain-Powered-eSIM

[baumstern]

PR opened in https://github.com/opensource-observer/oss-directory: https://github.com/opensource-observer/oss-directory/pull/428