feat: add customTx transactionType support for sol

- since we want to support custom instructions for sol, added customTx as a default transactionType if no other instruction combination matches.

Ticket: TMS-1338

Author: raj-bitgo

modules/sdk-coin-sol/src/lib/iface.ts

@@ -187,7 +187,8 @@ export type ValidInstructionTypes =
   | 'TokenTransfer'
   | 'SetPriorityFee'
   | 'MintTo'
-  | 'Burn';
+  | 'Burn'
+  | 'CustomInstruction';
 
 export type StakingAuthorizeParams = {
   stakingAddress: string;

modules/sdk-coin-sol/src/lib/transaction.ts

@@ -239,7 +239,7 @@ export class Transaction extends BaseTransaction {
           this.setTransactionType(TransactionType.CustomTx);
           break;
       }
-      if (transactionType !== TransactionType.StakingAuthorizeRaw) {
+      if (transactionType !== TransactionType.StakingAuthorizeRaw && transactionType !== TransactionType.CustomTx) {
         this.loadInputsAndOutputs();
       }
     } catch (e) {

modules/sdk-coin-sol/src/lib/transactionBuilderFactory.ts

@@ -59,6 +59,8 @@ export class TransactionBuilderFactory extends BaseTransactionBuilderFactory {
           return this.getStakingDelegateBuilder(tx);
         case TransactionType.CloseAssociatedTokenAccount:
           return this.getCloseAtaInitializationBuilder(tx);
+        case TransactionType.CustomTx:
+          return this.getCustomInstructionBuilder(tx);
         default:
           throw new InvalidTransactionError('Invalid transaction');
       }

modules/sdk-coin-sol/src/lib/utils.ts

@@ -346,7 +346,7 @@ export function getTransactionType(transaction: SolTransaction): TransactionType
   } else if (matchTransactionTypeByInstructionsOrder(instructions, ataCloseInstructionIndexes)) {
     return TransactionType.CloseAssociatedTokenAccount;
   } else {
-    throw new NotSupported('Invalid transaction, transaction not supported or invalid');
+    return TransactionType.CustomTx;
   }
 }
 
@@ -433,9 +433,7 @@ export function getInstructionType(instruction: TransactionInstruction): ValidIn
     case COMPUTE_BUDGET:
       return 'SetPriorityFee';
     default:
-      throw new NotSupported(
-        'Invalid transaction, instruction program id not supported: ' + instruction.programId.toString()
-      );
+      return 'CustomInstruction';
   }
 }