Add AS4C32M16SA/SB SDRAM parts and castellated breakout footprints

- AS4C32M16SA-7TCNTR (TSOP-54) and AS4C32M16SB-7BIN (TFBGA-54) 512Mb
  SDRAM symbols/footprints, imported via UltraLibrarian/SnapEDA sources
  (see MANIFEST.csv for full provenance).
- Fix Lattice LFE5U-45F-8BG381 symbol's Value/manf# grade suffix.
- Import 3 castellated breakout footprints (QFP48/QFP64/SSOP8,
  1.27mm castellation pitch) from coddingtonbear/kicad-castellated-breakouts
  into footprints/other/castellated_breakouts.pretty/, plus the upstream
  reference board projects under reference/ for future consultation.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01T5pjBJQ7tf9pwsSs8rG2sm

reference/kicad-castellated-breakouts/qfp48_0.5mm/qfp48_0.5mm.pro

@@ -0,0 +1,33 @@
+update=22/05/2015 07:44:53
+version=1
+last_client=kicad
+[general]
+version=1
+RootSch=
+BoardNm=
+[pcbnew]
+version=1
+LastNetListRead=
+UseCmpFile=1
+PadDrill=0.600000000000
+PadDrillOvalY=0.600000000000
+PadSizeH=1.500000000000
+PadSizeV=1.500000000000
+PcbTextSizeV=1.500000000000
+PcbTextSizeH=1.500000000000
+PcbTextThickness=0.300000000000
+ModuleTextSizeV=1.000000000000
+ModuleTextSizeH=1.000000000000
+ModuleTextSizeThickness=0.150000000000
+SolderMaskClearance=0.000000000000
+SolderMaskMinWidth=0.000000000000
+DrawSegmentWidth=0.200000000000
+BoardOutlineThickness=0.100000000000
+ModuleOutlineThickness=0.150000000000
+[cvpcb]
+version=1
+NetIExt=net
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]