Variety of content updates for Gaia docs

[mmulji-ic]

Problem

A variety of minor issues were found in Gaia docs during the Docusaurus migration, these are detailed below.

Closing criteria

All issues below are fixed.

Problem details

• Missing footer logo on main page
• Remove outdated/defunct wallets and explorers from the main section
• /governance/proposal-types is incorrectly named by “Parameter changes” in the Governance menu and the links for Software Upgrade IBC Client Update proposal types are missing.
• /#cosmos-hub-wallets
  • Keplr and Ledger have Android, iOS apps
  • “Metamask Snaps” - perhaps add a one-line explainer below
• /getting-started/what-is-gaia: is this normal that the interchain-security and global-fee modules aren’t mentioned?
• /hub-tutorials/gaiad#key-types: The “cosmospub” and “cosmosvalconspub” prefix are outdated, as they can’t be parsed using gaiad keys parse.
• Migrations instructions page is a README and the instructions list isn’t sorted
• /getting-started/installation#install-the-binaries: output are still for version v9.0.0
• /hub-tutorials/join-testnet#version-history : table isn’t updated
• /architecture/adr/adr-001-interchain-accounts: the title is duplicated
• /interchain-security: add a link to the ICS https://interchainsecurity.dev/ page or gh repo