Option to load custom RE parameters in DF chemistry sample

[msoeken]

This adds a program argument -p (long --paramsfile) to the Python script of the DF chemistry sample to have the option to load one or multiple RE configurations that are stored as objects or arrays in JSON files. If no such argument is specified, the default configuration is used as before.

This addresses the second bullet point in #1115.

[github-actions]

Benchmark for f9a68d3

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Test	Base	PR	%
Array append evaluation	331.0±3.60µs	328.8±1.79µs	-0.66%
Array literal evaluation	198.6±0.83µs	181.9±7.59µs	-8.41%
Array update evaluation	414.2±11.15µs	412.4±10.60µs	-0.43%
Core + Standard library compilation	21.5±0.94ms	22.7±1.05ms	+5.58%
Deutsch-Jozsa evaluation	5.1±0.04ms	5.1±0.08ms	0.00%
Large file parity evaluation	34.0±0.06ms	34.2±0.88ms	+0.59%
Large input file compilation	13.3±0.54ms	13.8±0.57ms	+3.76%
Large input file compilation (interpreter)	52.4±2.12ms	53.8±1.98ms	+2.67%
Large nested iteration	32.2±1.08ms	32.2±1.03ms	0.00%
Perform Runtime Capabilities Analysis (RCA) on Deutsch-Jozsa sample	1587.3±68.70µs	1573.6±34.17µs	-0.86%
Perform Runtime Capabilities Analysis (RCA) on large file sample	8.0±0.16ms	7.9±0.16ms	-1.25%
Perform Runtime Capabilities Analysis (RCA) on teleport sample	1451.4±75.10µs	1435.2±55.77µs	-1.12%
Perform Runtime Capabilities Analysis (RCA) on the core and std libraries	28.3±0.28ms	28.4±0.53ms	+0.35%
Teleport evaluation	90.5±3.68µs	90.3±3.81µs	-0.22%