[108] ISSUE-081: Add Soroban Transaction Preflight Example - #148

The strategy configuration was canceled because "ci._20_x" failed

Prefer using an optional chain expression instead, as it's more concise and easier to read

Prefer using an optional chain expression instead, as it's more concise and easier to read

Replace `⏎····server,⏎····contractId,⏎····xdr.ScVal.scvSymbol('nonexistent_key'),⏎····'persistent',⏎··` with `server,·contractId,·xdr.ScVal.scvSymbol('nonexistent_key'),·'persistent'`

Replace `⏎········'····These·entries·must·be·signed·(or·pre-authorized)·before·submission.',⏎······` with `'····These·entries·must·be·signed·(or·pre-authorized)·before·submission.'`

Replace `⏎····chalk.bold('\n··Resource·estimates:'),⏎··` with `chalk.bold('\n··Resource·estimates:')`

Replace `⏎······'Transaction·assembled·with·simulation·footprint·and·updated·resource·fee.',⏎····` with `'Transaction·assembled·with·simulation·footprint·and·updated·resource·fee.'`

'tx' is never reassigned. Use 'const' instead

Replace `⏎··testnetHash:·string,⏎··mainnetHash:·string,⏎` with `testnetHash:·string,·mainnetHash:·string`

'network' is never reassigned. Use 'const' instead

Delete `⏎···`