feat: ability to skip migration of certain contracts/models

[lambda-0x]

Description

fix: #1924

Related issue

Tests

• Yes
• No, because they aren't needed
• No, because I need help

Added to documentation?

• README.md
• Dojo Book
• No documentation needed

Checklist

• I've formatted my code (scripts/prettier.sh, scripts/rust_fmt.sh, scripts/cairo_fmt.sh)
• I've linted my code (scripts/clippy.sh, scripts/docs.sh)
• I've commented my code
• I've requested a review after addressing the comments

[codecov]

Codecov Report

Attention: Patch coverage is 76.68394% with 45 lines in your changes missing coverage. Please review.

Project coverage is 68.37%. Comparing base (af5be66) to head (f05cbe7).

Files	Patch %	Lines
bin/sozo/src/commands/migrate.rs	0.00%	14 Missing ⚠️
...ates/dojo-bindgen/src/plugins/typescript_v2/mod.rs	8.33%	11 Missing ⚠️
bin/sozo/src/commands/dev.rs	0.00%	9 Missing ⚠️
crates/dojo-world/src/manifest/mod.rs	58.33%	5 Missing ⚠️
crates/dojo-bindgen/src/lib.rs	96.15%	1 Missing ⚠️
crates/dojo-test-utils/src/migration.rs	75.00%	1 Missing ⚠️
crates/dojo-world/src/contracts/world_test.rs	92.85%	1 Missing ⚠️
crates/dojo-world/src/manifest/manifest_test.rs	98.03%	1 Missing ⚠️
crates/sozo/ops/src/migration/mod.rs	80.00%	1 Missing ⚠️
crates/sozo/ops/src/migration/utils.rs	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2026      +/-   ##
==========================================
+ Coverage   68.31%   68.37%   +0.05%     
==========================================
  Files         326      326              
  Lines       40424    40566     +142     
==========================================
+ Hits        27616    27737     +121     
- Misses      12808    12829      +21     

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[glihm]

Thanks for the changes @lambda-0x! I'm just thinking that we may ignore some of the generated manifests that are not overlays and keep perhaps only the manifest.toml and manifest.json actually.