Add initial implementation of rich output with emojis.

[fnando]

What

Running command with --quiet:

$ stellar contract build && stellar --quiet contract deploy --wasm target/wasm32-unknown-unknown/release/hello_world.wasm --source alice --network testnet
cargo rustc --manifest-path=contracts/hello_world/Cargo.toml --crate-type=cdylib --target=wasm32-unknown-unknown --release
    Finished `release` profile [optimized] target(s) in 0.17s
CDM53PWFXWQGGHUVST644EHZFEQFPL7S3AXN3Q23NR44OCOPWUE6HCVD

Running command and uploading contract for the first time:

$ stellar contract build && stellar contract deploy --wasm target/wasm32-unknown-unknown/release/hello_world.wasm --source alice --network testnet
cargo rustc --manifest-path=contracts/hello_world/Cargo.toml --crate-type=cdylib --target=wasm32-unknown-unknown --release
   Compiling hello-world v0.0.0 (/Users/fnando/Projects/stellar/soroban-hello-world/contracts/hello_world)
    Finished `release` profile [optimized] target(s) in 0.46s
ℹ️ Simulating install transaction…
🌎 Submitting install transaction…
ℹ️ Using wasm hash 48461f23c191d6482cf07d58933642fa9b3daea39dee0b7f7011c55dba2b6694
ℹ️ Simulating deploy transaction…
🌎 Submitting deploy transaction…
🔗 https://stellar.expert/explorer/testnet/tx/109e142001245fc7b0465cdb4b16fc26714d1cadc56f4394b4ed9d3412a73bd4
🔗 https://stellar.expert/explorer/testnet/contract/CBUSXDM33IOGNQQFCLC7Q7AALU4OSIVIBFNHBOFRWFRBLPDTRUNIBCII
✅ Deployed!
CBUSXDM33IOGNQQFCLC7Q7AALU4OSIVIBFNHBOFRWFRBLPDTRUNIBCII

Reusing contract that hasn't changed:

$ stellar contract build && stellar contract deploy --wasm target/wasm32-unknown-unknown/release/hello_world.wasm --source alice --network testnet
cargo rustc --manifest-path=contracts/hello_world/Cargo.toml --crate-type=cdylib --target=wasm32-unknown-unknown --release
    Finished `release` profile [optimized] target(s) in 0.07s
ℹ️ Reusing contract previously uploaded
ℹ️ Using wasm hash 48461f23c191d6482cf07d58933642fa9b3daea39dee0b7f7011c55dba2b6694
ℹ️ Simulating deploy transaction…
🌎 Submitting deploy transaction…
🔗 https://stellar.expert/explorer/testnet/tx/7f8bae8b8f47be2a19182060facbeb6f2433aea9950afd503683fde8471d367f
🔗 https://stellar.expert/explorer/testnet/contract/CB7NGFIYUJVECW4ULO4SQFNLO5IYMEYUYZRVWETEWBGI4FHINENCAB2T
✅ Deployed!
CB7NGFIYUJVECW4ULO4SQFNLO5IYMEYUYZRVWETEWBGI4FHINENCAB2T

Why

So users can have more info when commands are being executed.

Known limitations

N/A