feat(shorebird_cli): scope Flutter installations by revision

[felangel]

Description

• feat(shorebird_cli): scope Flutter installations by revision
  • This change adjusts the CLI and installation scripts to install flutter in $SHOREBIRD_ROOT/bin/cache/flutter/$FLUTTER_REVISION so that the CLI can support multiple Flutter revisions (part of feat: shorebird should support older flutter versions #472)

Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• ❌ Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactor
• ✅ Build configuration change
• 📝 Documentation
• 🗑️ Chore

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (6b50023) 100.00% compared to head (d7e44f5) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1007   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           81        81           
  Lines         3063      3065    +2     
=========================================
+ Hits          3063      3065    +2     

Files Changed	Coverage Δ
packages/shorebird_cli/lib/src/cache.dart	100.00% <100.00%> (ø)
packages/shorebird_cli/lib/src/command_runner.dart	100.00% <100.00%> (ø)
...shorebird_cli/lib/src/commands/doctor_command.dart	100.00% <100.00%> (ø)
..._cli/lib/src/commands/patch/patch_aar_command.dart	100.00% <100.00%> (ø)
.../lib/src/commands/patch/patch_android_command.dart	100.00% <100.00%> (ø)
..._cli/lib/src/commands/patch/patch_ios_command.dart	100.00% <100.00%> (ø)
...rc/commands/patch/patch_ios_framework_command.dart	100.00% <100.00%> (ø)
...horebird_cli/lib/src/commands/upgrade_command.dart	100.00% <100.00%> (ø)
packages/shorebird_cli/lib/src/ios_deploy.dart	100.00% <100.00%> (ø)
packages/shorebird_cli/lib/src/process.dart	100.00% <100.00%> (ø)
... and 3 more

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