feat: improve logo symbols with unified stackable design

- Make all symbol boxes same size (12.7mm x 5.08mm) for perfect stacking
- Separate symbol graphics from text for better control
- Widen footprint silkscreen boxes to prevent text clipping
- Eduard Iten, Created By, and CC logos now perfectly stackable
- All logos maintain proper exclude_from_bom settings

artwork/logos/created_by_logo.svg

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="6.5232091mm"
+   height="1.2756683mm"
+   viewBox="0 0 6.5232091 1.2756683"
+   version="1.1"
+   id="svg1"
+   inkscape:version="1.4 (86a8ad7, 2024-10-11)"
+   sodipodi:docname="created_by_logo.svg"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <sodipodi:namedview
+     id="namedview1"
+     pagecolor="#ffffff"
+     bordercolor="#000000"
+     borderopacity="0.25"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     inkscape:document-units="mm"
+     inkscape:zoom="7.0127946"
+     inkscape:cx="29.303582"
+     inkscape:cy="30.087863"
+     inkscape:window-width="1150"
+     inkscape:window-height="824"
+     inkscape:window-x="391"
+     inkscape:window-y="517"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="layer1" />
+  <defs
+     id="defs1" />
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(-52.744945,-77.275405)">
+    <text
+       xml:space="preserve"
+       style="font-weight:bold;font-size:1.40647px;font-family:'Courier New';-inkscape-font-specification:'Courier New, Bold';text-align:center;writing-mode:lr-tb;direction:ltr;text-anchor:middle;fill:#000000;stroke:none;stroke-width:0.264582"
+       x="55.98053"
+       y="78.259933"
+       id="text1"><tspan
+         sodipodi:role="line"
+         style="font-style:normal;font-variant:normal;font-weight:300;font-stretch:normal;font-size:1.40647px;font-family:'Exo 2';-inkscape-font-specification:'Exo 2, Light';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;fill:#000000;stroke:none;stroke-width:0.264582"
+         x="55.98053"
+         y="78.259933"
+         id="tspan3">created by</tspan></text>
+  </g>
+</svg>