Co-operative Close Channels

[erdemyerebasmaz]

This PR implements the UI components required for changes in:

• https://github.com/breez/breez/pull/243

that introduces co-operative close channel operations.

Changelist:

• Generate proto messages a70a127
  • Add comments that explain why "protoc_plugin v20.0.1" needs to be used.
• Add 'closeChannels' to Breez Library's iOS Bindings 46481ed80d0b182f2bd76b2a554a2ec4331b7316
• Create & add co-operative close channels page under Preferences 4d59d33aa125a694d92cf32f3a8ed5e8a5d1f6ac
  • Declare CloseChannels as account action
  • Open mail or share support mail when clicked
  • Prevent dismissing dialog when closing channels is in progress

Other changelist:

• Update dependencies to latest
• Increase compileSdkVersion to 34(Android camera & lifecycle requirement)
• Use "given version or earlier" syntax for dependencies that require Flutter 3.10
• Add .flutter-version to .gitignore 38d90b45447abee101ed0ec893d201b0703f571c