Report assembly error strings for compile API endpoint

[algochoi]

Summary

This PR adds the assembly error strings so developers can see which errors were present in the program when calling the API. Prior to this change, the API only reported the number of errors in the program.

Closes #3082 .

Test Plan

Tested on sandbox.
Example program:

#pragma version 7
int v

Example response:

algosdk.error.AlgodHTTPError: 1: unsupported version: 7
2: strconv.ParseUint: parsing "v": invalid syntax

[codecov-commenter]

Codecov Report

Merging #3190 (96066e6) into master (f72764b) will decrease coverage by 4.23%.
The diff coverage is 0.00%.

❗ Current head 96066e6 differs from pull request most recent head eac9636. Consider uploading reports for the commit eac9636 to get more accurate results

@@            Coverage Diff             @@
##           master    #3190      +/-   ##
==========================================
- Coverage   47.21%   42.98%   -4.24%     
==========================================
  Files         365      363       -2     
  Lines       58361    58353       -8     
==========================================
- Hits        27558    25082    -2476     
- Misses      27615    30188    +2573     
+ Partials     3188     3083     -105     

Impacted Files	Coverage Δ
cmd/goal/clerk.go	9.18% <0.00%> (ø)
cmd/goal/multisig.go	10.00% <0.00%> (ø)
daemon/algod/api/server/v2/handlers.go	0.00% <0.00%> (ø)
data/transactions/logic/assembler.go	78.08% <0.00%> (-1.00%)	⬇️
ledger/internal/assetcow.go	0.00% <0.00%> (-100.00%)	⬇️
crypto/merklearray/worker.go	0.00% <0.00%> (-100.00%)	⬇️
crypto/compactcert/structs.go	0.00% <0.00%> (-100.00%)	⬇️
agreement/agreementtest/keyManager.go	0.00% <0.00%> (-100.00%)	⬇️
daemon/algod/api/server/lib/middlewares/auth.go	0.00% <0.00%> (-100.00%)	⬇️
agreement/agreementtest/simulate.go	0.00% <0.00%> (-87.68%)	⬇️
... and 103 more

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