feat(codegen): support multi-validators

* rename force_wrap to force
* add a bunch of builder methods to Term<Name>
* refactor one tiny location to show off builder methods
* split generate into `generate` and `generate_test`
* create wrap_as_multi_validator function

Co-authored-by: Kasey White <kwhitemsg@gmail.com>

examples/acceptance_tests/071/validators/spend.ak

@@ -96,8 +96,8 @@ pub fn validate_pool_borrow(
   True
 }
 
-validator pool_contract {
-  fn(datum: PoolDatum, redeemer: PoolRedeemer, ctx: ScriptContext) {
+validator {
+  fn pool_contract(datum: PoolDatum, redeemer: PoolRedeemer, ctx: ScriptContext) {
     when redeemer.action is {
       PoolWithdraw(_) ->
         True