[RM-9345] [ParametersChecker] add a check for lambdaRange conformity with full multiobs

Created on 2024-12-04 10:31:57 by Didier Vibert. % Done: 0

with full multiObs, lambdaRange has a different structure:

no multiobs, or mutliobs "merge":
<pre>
"multiobsmethod": "merge",
"lambdarange": [
12510,
18500
],
</pre>

multiobs "full":
<pre>
"multiobsmethod": "full",
"lambdarange": {
"1": [
12510.0,
15500
],
"2": [
15400,
18500
]
</pre>