Initial JPEG-LS FPGA encoder baseline with tooling and timeout fix

.gitignore

@@ -0,0 +1,40 @@
+# Build and simulator artifacts
+.Xil/
+xsim.dir/
+work/
+questa_work/
+fpga/sim/work/
+
+# Tool output logs
+transcript
+*.jou
+*.log
+*.pb
+*.vstf
+
+# Vivado/Questa generated reports and scratch
+fpga/synthesis/quick_synth_reports/
+fpga/synthesis/timing_priority_reports/
+
+# Python local dependency/cache folders
+tools/jls_compat/.deps/
+**/__pycache__/
+*.pyc
+
+# Generated compatibility output
+tools/jls_compat/out/
+
+# External repositories kept outside this repo history for now
+third_party/charls/
+third_party/libjpeg/
+
+# .NET build artifacts and user-local files
+tools/jls_decoder/bin/
+tools/jls_decoder/obj/
+tools/jls_decoder/*.png
+*.user
+
+# Temporary files
+*.tmp
+modelsim.ini
+library_cfg.alintws