feat(avm): add pil + trace placeholders

barretenberg/cpp/pil/avm/bytecode.pil

@@ -0,0 +1,14 @@
+
+namespace bytecode(256);
+
+    pol commit packed;
+    pol commit length_remaining;
+    pol commit running_hash;
+
+    pol commit end_latch;
+
+    // TODO: Come back to this;
+    // pol commit class_id;
+    // pol commit contract_address;
+
+

barretenberg/cpp/pil/avm/main.pil

@@ -5,6 +5,7 @@ include "constants_gen.pil";
 include "constants_misc.pil";
 include "gas.pil";
 include "kernel.pil";
+include "bytecode.pil";
 include "fixed/powers.pil";
 include "gadgets/conversion.pil";
 include "gadgets/sha256.pil";

barretenberg/cpp/src/barretenberg/vm/avm/generated/circuit_builder.cpp

@@ -129,6 +129,10 @@ AvmCircuitBuilder::ProverPolynomials AvmCircuitBuilder::compute_polynomials() co
                 polys.binary_op_id.set_if_valid_index(i, rows[i].binary_op_id);
                 polys.binary_sel_bin.set_if_valid_index(i, rows[i].binary_sel_bin);
                 polys.binary_start.set_if_valid_index(i, rows[i].binary_start);
+                polys.bytecode_end_latch.set_if_valid_index(i, rows[i].bytecode_end_latch);
+                polys.bytecode_length_remaining.set_if_valid_index(i, rows[i].bytecode_length_remaining);
+                polys.bytecode_packed.set_if_valid_index(i, rows[i].bytecode_packed);
+                polys.bytecode_running_hash.set_if_valid_index(i, rows[i].bytecode_running_hash);
                 polys.cmp_a_hi.set_if_valid_index(i, rows[i].cmp_a_hi);
                 polys.cmp_a_lo.set_if_valid_index(i, rows[i].cmp_a_lo);
                 polys.cmp_b_hi.set_if_valid_index(i, rows[i].cmp_b_hi);