[ERC20 Launchpad] - Endpoint integration for Launch token step

[mzparacha]

Link to Issue

Closes: #9207

Description of Changes

Added endpoint integration for Launch token step

"How We Fixed It"

N/A

Test Plan

• Enable FLAG_TOKENIZED_COMMUNITY
• Visit /createTokenCommunity
• Verify you see the auth modal popup with only EVM wallet options (if you are not logged in already)
• Verify you see the address selection modal popup (if you are logged in)
• If you close the auth modal or the address selection modal without authentication, then verify you get these modals when you try to submit.
• Fill the form - verify the form validation works as expected
• Submit - the form submission will fail with this error ATM (plz see "Other Considerations" for more info)

Deployment Plan

N/A

Other Considerations

• ATM the form submission will throw an error like this, it will be fixed when we deploy the token specific abis (cc: @ianrowan)

• There are some TODO's left intentionally in the code that relates to adding some token-specific information, these will be done in a followup.

[Israellund]

Approving, but agree with Marcin's comments