deploy requires a Solana.toml

[nickfrosty]

currently, the deploy command requires a Solana.toml to exist.
while the toml file can make things easier for mucho to parse, developers should not be forced to create and use one

i consider this a bug.

[arrayappy]

Tested that deploy command works without Solana.toml as well. However, it currently breaks if Solana.toml exists but doesn't have entries for the current program/cluster.

Suggestion: We could improve this further by making Solana.toml entirely optional, where:

• If it exists, use it as a convenient way to specify program IDs and settings
• If it doesn't exist or doesn't have entries for current program/cluster, fall back to auto-detection

This would give flexibility while maintaining the convenience of using toml when desired.

Would you like me to create a PR with these changes?