Move iteration out of the UniformSolver (PR 1/2)

As CI is still failing until HerbCore is published, I checked locally with the following setup, and all tests pass 👍

packages = [
    PackageSpec(name="HerbConstraints", rev="uniform-solver"),
    PackageSpec(name="HerbGrammar", rev="dev"),
    PackageSpec(name="HerbCore", rev="dev"),
    PackageSpec(name="HerbInterpret", rev="dev"),
    PackageSpec(name="HerbSearch", rev="uniform-solver"), 
    PackageSpec(name="HerbSpecification", rev="dev")
]

Manifest.toml

```julia [1520ce14] AbstractTrees v0.4.5 [ec485272] ArnoldiMethod v0.4.0 [bbf7d656] CommonSubexpressions v0.3.0 [34da2185] Compat v4.14.0 [864edb3b] DataStructures v0.18.20 [86223c79] Graphs v1.10.0 [1fa96474] HerbConstraints v0.2.1 `https://github.com/Herb-AI/HerbConstraints.jl.git#uniform-solver` [2b23ba43] HerbCore v0.3.0 `https://github.com/Herb-AI/HerbCore.jl.git#dev` [4ef9e186] HerbGrammar v0.2.2 `https://github.com/Herb-AI/HerbGrammar.jl.git#dev` [d25df0c9] Inflate v0.1.4 [692b3bcd] JLLWrappers v1.5.0 [b964fa9f] LaTeXStrings v1.3.1 [d8e11817] MLStyle v0.4.17 [1914dd2f] MacroTools v0.5.13 [bac558e1] OrderedCollections v1.6.3 [aea7be01] PrecompileTools v1.2.1 [21216c6a] Preferences v1.4.3 [ae029012] Requires v1.3.0 [699a6c99] SimpleTraits v0.9.4 [90137ffa] StaticArrays v1.9.3 [1e83bf80] StaticArraysCore v1.4.2 [b4f28e30] TikzGraphs v1.4.0 [37f6aa50] TikzPictures v3.5.0 [39424ebd] TreeView v0.5.1 [6e34b625] Bzip2_jll v1.0.8+1 [83423d85] Cairo_jll v1.18.0+1 [2e619515] Expat_jll v2.5.0+0 [a3f928ae] Fontconfig_jll v2.13.93+0 [d7e528f0] FreeType2_jll v2.13.1+0 [78b55507] Gettext_jll v0.21.0+0 [7746bdde] Glib_jll v2.80.0+0 [3b182d85] Graphite2_jll v1.3.14+0 [655565e8] HarfBuzz_ICU_jll v2.8.1+0 [2e76f6c2] HarfBuzz_jll v2.8.1+1 ⌅ [a51ab1cf] ICU_jll v69.1.0+0 [aacddb02] JpegTurbo_jll v3.0.2+0 [88015f11] LERC_jll v3.0.0+1 [1d63c593] LLVMOpenMP_jll v15.0.7+0 [dd4b983a] LZO_jll v2.10.1+0 ⌅ [e9f186c6] Libffi_jll v3.2.2+1 [d4300ac3] Libgcrypt_jll v1.8.7+0 [7add5ba3] Libgpg_error_jll v1.42.0+0 [94ce4f54] Libiconv_jll v1.17.0+0 [4b2f31a3] Libmount_jll v2.39.3+0 ⌅ [89763e89] Libtiff_jll v4.4.0+0 [38a345b3] Libuuid_jll v2.39.3+1 ⌃ [d3a379c0] LittleCMS_jll v2.12.0+0 ⌃ [643b3616] OpenJpeg_jll v2.4.0+0 ⌅ [458c3c95] OpenSSL_jll v1.1.23+0 [30392449] Pixman_jll v0.42.2+0 ⌅ [9c32591e] Poppler_jll v21.9.0+0 [02c8fc9c] XML2_jll v2.12.6+0 [aed1982a] XSLT_jll v1.1.34+0 [4f6342f7] Xorg_libX11_jll v1.8.6+0 [0c0b7dd1] Xorg_libXau_jll v1.0.11+0 [a3789734] Xorg_libXdmcp_jll v1.1.4+0 [1082639a] Xorg_libXext_jll v1.3.4+4 [ea2f1a96] Xorg_libXrender_jll v0.9.10+4 [14d82f49] Xorg_libpthread_stubs_jll v0.1.1+0 [c7cfdc94] Xorg_libxcb_jll v1.15.0+0 [c5fb5394] Xorg_xtrans_jll v1.5.0+0 [3161d3a3] Zstd_jll v1.5.6+0 [b53b4c65] libpng_jll v1.6.43+1 ⌅ [d7dd28d6] tectonic_jll v0.13.1+0 [0dad84c5] ArgTools v1.1.1 [56f22d72] Artifacts [2a0f44e3] Base64 [ade2ca70] Dates [8ba89e20] Distributed [f43a241f] Downloads v1.6.0 [7b1f6079] FileWatching [b77e0a4c] InteractiveUtils [b27032c2] LibCURL v0.6.4 [76f85450] LibGit2 [8f399da3] Libdl [37e2e46d] LinearAlgebra [56ddb016] Logging [d6f4376e] Markdown [a63ad114] Mmap [ca575930] NetworkOptions v1.2.0 [44cfe95a] Pkg v1.10.0 [de0858da] Printf [3fa0cd96] REPL [9a3f8284] Random [ea8e919c] SHA v0.7.0 [9e88b42a] Serialization [1a1011a3] SharedArrays [6462fe0b] Sockets [2f01184e] SparseArrays v1.10.0 [10745b16] Statistics v1.10.0 [fa267f1f] TOML v1.0.3 [a4e569a6] Tar v1.10.0 [8dfed614] Test [cf7118a7] UUIDs [4ec0a83e] Unicode [e66e0078] CompilerSupportLibraries_jll v1.1.0+0 [deac9b47] LibCURL_jll v8.4.0+0 [e37daf67] LibGit2_jll v1.6.4+0 [29816b5a] LibSSH2_jll v1.11.0+1 [c8ffd9c3] MbedTLS_jll v2.28.2+1 [14a3606d] MozillaCACerts_jll v2023.1.10 [4536629a] OpenBLAS_jll v0.3.23+4 [efcefdf7] PCRE2_jll v10.42.0+1 [bea87d4a] SuiteSparse_jll v7.2.1+1 [83775a58] Zlib_jll v1.2.13+1 [8e850b90] libblastrampoline_jll v5.8.0+1 [8e850ede] nghttp2_jll v1.52.0+1 [3f19e933] p7zip_jll v17.4.0+2 ```

Herb-AI / HerbConstraints.jl

Move iteration out of the UniformSolver (PR 1/2) #34