feat: add acct_params_get opcode

[vuvoth]

Proposed Changes

• Add AcctParamsGet to handle acct_params_get opcode(check opcode-list.ts)
• Add acct_params_get to parser (parser.ts).
• Create create for interpreter.getAcccount (check interpreter.ts). When create flag is false we will throws exception if account is not found else if create is true we will create new account and add this account to context.
• Unit test for them

TODO

• Update changelog.md after PR approval.

Please review my PR! Thank you a lot.

[robert-zaremba]

pre approving. Left few suggestions.