feat(nano): restrict usage of float and complex numbers

[jansegre]

WARNING: this causes breakage with testnet-hotel, because some of the published OCBs use the float division operator.

Motivation

Some syntax still allows float and complex numbers, which could lead to different results in different hardware. We should lift these restrictions when we have a deterministic float implementation.

Acceptance Criteria

• Forbid float literals in Blueprint code
• Forbid complex literals in Blueprint code
• Forbid use of float division (/) in Blueprint code

Checklist

• If you are requesting a merge into master, confirm this code is production-ready and can be included in future releases as soon as it gets merged

[github-actions]

Bencher Report

Branch	feat/nano/restrict-float
Testbed	ubuntu-22.04

Click to view all benchmark results

Benchmark	Latency	Benchmark Result minutes (m) (Result Δ%)	Lower Boundary minutes (m) (Limit %)	Upper Boundary minutes (m) (Limit %)
sync-v2 (up to 20000 blocks)	📈 view plot 🚷 view threshold	1.94 m (+15.08%) Baseline: 1.69 m	1.52 m (78.20%)	2.03 m (95.90%)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.77%. Comparing base (93c1aa5) to head (338a532).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1396      +/-   ##
==========================================
- Coverage   85.83%   85.77%   -0.06%     
==========================================
  Files         430      430              
  Lines       33061    33071      +10     
  Branches     5171     5173       +2     
==========================================
- Hits        28377    28367      -10     
- Misses       3650     3665      +15     
- Partials     1034     1039       +5     

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