Support overwriting mode_bits for pb_type through bitstream setting file #6229

Job	Run time
Detect code changes	8s
Debug Build (Ubuntu 22.04)	30m 18s
Build w/o Yosys (Ubuntu 22.04)	19m 10s
docker_regression_tests	0s
Build w/o Yosys plugin (Ubuntu 22.04)	34m 45s
Build Compatibility: GCC-9 (Ubuntu 22.04)	36m 11s
Build w/o test (Ubuntu 22.04)	34m 17s
No-warning Build (Ubuntu 22.04)	33m 54s
Build Compatibility: GCC-10 (Ubuntu 22.04)	36m 44s
Build w/o version number (Ubuntu 22.04)	35m 10s
Build (GCC-11 on Ubuntu 20.04)	40m 12s
Build w/o SWIG support (Ubuntu 22.04)	36m 8s
Build Compatibility: GCC-11 (Ubuntu 22.04)	35m 46s
Build (Clang-10 on Ubuntu 20.04)	33m 41s
Build Compatibility: GCC-12 (Ubuntu 22.04)	40m 45s
Build Compatibility: Clang-11 (Ubuntu 22.04)	39m 37s
Build Compatibility: Clang-12 (Ubuntu 22.04)	39m 37s
Build Compatibility: Clang-13 (Ubuntu 22.04)	41m 47s
Build Compatibility: Clang-14 (Ubuntu 22.04)	40m 41s
Build docker image for distribution	31s
linux_regression_tests (basic_reg_yosys_only_test)	17s
linux_regression_tests (basic_reg_test)	18m 7s
linux_regression_tests (fpga_verilog_reg_test)	8m 26s
linux_regression_tests (fpga_bitstream_reg_test)	12m 57s
linux_regression_tests (fpga_sdc_reg_test)	31s
linux_regression_tests (fpga_spice_reg_test)	18s
linux_regression_tests (micro_benchmark_reg_test)	4m 10s
linux_regression_tests (quicklogic_reg_test)	14m 24s
linux_regression_tests (vtr_benchmark_reg_test)	10m 53s
linux_regression_tests (iwls_benchmark_reg_test)	11m 51s
linux_regression_tests (tcl_reg_test)	17s
	11h 31m 33s

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