Mark ethers optional

[Aman035]

Fixes Issue

Changes proposed

Check List (Check all the applicable boxes)

• My code follows the code style of this project.
• My change requires changes to the documentation.
• I have updated the documentation accordingly.
• This PR does not contain plagiarized content.
• The title of my pull request is a short description of the requested changes.

Screenshots

Note to reviewers

[github-actions]

In the packages/restapi/README.md file:

• Typo: @pushprotocol/restapi@latest, "latest" should not be preceded with '@'.
• Typo: "To approve a space request" should be "To approve a space request".
• Typo: "Disconnect an ongoing video call", "an-ongoing" should be "an ongoing".
• Typo: "Request a Video Call", "a-video-call" should be "a video call".
• Typo: "Reject an incoming Video Call", "a-incoming" should be "an incoming".
• Typo: "Manage Media Config", "Manage" should be "Managing".
• Typo: "Fecthing list of user spaces", "Fecthing" should be "Fetching".
• Typo: "Fecthing list of user space requests", "Fecthing" should be "Fetching".

In the packages/restapi/package.json file:

• There are multiple typos and formatting issues. Please revise the structure of the JSON file to be correct.
• Missing closing curly braces in the peerDependencies and dependencies objects.

In the packages/restapi/src/lib/helpers/signer.ts file:

• Missing closing curly brace for the signTypedData method definition.

In the packages/restapi/src/lib/pushNotification/pushNotificationBase.ts file:

• Typo: "ROLEL_TYPE" should be "RANGE_TYPE".
• Typo: "LENGTH_LOWER_LIMTI" should be "LENGTH_LOWER_LIMIT".
• Typo: "constructor(signer: SignerType)" missing closing curly brace.
• Typo: validateCAIP(address) should be validateCAIP(address).
• Formatting issues in the getChannelOrAliasInfo method.
• Typo: Missing closing curly brace after the getChannelOrAliasInfo method.

Please correct these issues and re-check after the revisions.