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/qfp64_0.5mm/qfp64.pro

@@ -0,0 +1,63 @@
+update=Wednesday, November 22, 2017 'PMt' 03:36:40 PM
+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]
+LibName1=power
+LibName2=device
+LibName3=transistors
+LibName4=conn
+LibName5=linear
+LibName6=regul
+LibName7=74xx
+LibName8=cmos4000
+LibName9=adc-dac
+LibName10=memory
+LibName11=xilinx
+LibName12=microcontrollers
+LibName13=dsp
+LibName14=microchip
+LibName15=analog_switches
+LibName16=motorola
+LibName17=texas
+LibName18=intel
+LibName19=audio
+LibName20=interface
+LibName21=digital-audio
+LibName22=philips
+LibName23=display
+LibName24=cypress
+LibName25=siliconi
+LibName26=opto
+LibName27=atmel
+LibName28=contrib
+LibName29=valves
+LibName30=stm32