Add socket methods across vector, scalar, color, grid, bundle and data-block sockets

[BradyAJohnston]

Stacked on #245 and #244 (merged into this branch); the diff shrinks to this PR's changes once those land.

• Vector: Vector Math methods (min, max, floor, snap, wrap, trig, faceforward, refract, ...), to_spherical/to_cylindrical, project_point, euler_to_rotation.
• Integer: divide_round, divide_ceiling, gcd, lcm, to_float, shift/rotate (Bit Math; right shifts are logical). Float: smooth_min/smooth_max, inverse_sqrt, is_close.
• round(), math.floor/ceil/trunc on float sockets return integer sockets (Float To Integer).
• Color: gamma(). Color + color (and -, *, /) uses Mix and keeps alpha; with a scalar or vector a color still acts as a vector. Breaking for color-color arithmetic, which returned a vector.
• hash(seed) and blur() on the types their nodes support.
• Grids: set_background, set_transform, advect, sdf_union/sdf_intersect/sdf_difference.
• Bundles: store, get.<type>, has, join / | (later bundle wins, checked by evaluation), paths; geometry bundle() / set_bundle().
• Data blocks: camera_info(), bone_info(), image info(), collection children(), material selection().

The exporter emits the methods where a spec can express them. Numeric methods are checked against Python/numpy in tests/test_socket_method_evaluation.py.

Found along the way: SDF Grid Boolean doesn't round-trip through codegen on main (#246).

[codecov]

Codecov Report

❌ Patch coverage is 94.37086% with 17 lines in your changes missing coverage. Please review.
✅ Project coverage is 98.30%. Comparing base (048af3d) to head (8071c0d).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/nodebpy/builder/socket.py	94.42%	15 Missing ⚠️
src/nodebpy/export/codegen.py	86.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #247      +/-   ##
==========================================
- Coverage   98.34%   98.30%   -0.05%     
==========================================
  Files         101      101              
  Lines       30283    30572     +289     
==========================================
+ Hits        29783    30055     +272     
- Misses        500      517      +17     

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[BradyAJohnston]

Squash-merged into main as a413f32 with the conflicts from #244, #245 and #248 resolved.