Add post to trigger pipeline

[badetitou]

I added the code to be able to trigger pipelines from Pharo

Example:

glphApi pipelines post: 6728 withVariables: {
	'variables[LABEL]' -> 'Projects'.
	'variables[CIDESCRIPTION]' -> 'Projects'.
	'variables[PROJECTS_ID]' -> '4304, 4810, 942, 3129, 7362, 352, 353, 897, 132, 6404, 6403, 6599, 6598, 5649, 5670, 5770, 5648, 5688, 5643, 5686, 5683, 5484, 5689, 5681, 5680, 5679, 5676, 5650, 5646, 5636, 5687, 6164'.
	'variables[NUMWEEKPRIOR]' -> '0'.
	'variables[DATE]' -> '05-25-2025'.
	'token' -> '<myToken>'.
	'ref' -> 'main'. 
} asDictionary

(diff are more visible here: 27a8a82)

[coveralls]

Pull Request Test Coverage Report for Build 15488647200

Details

• 282 of 290 (97.24%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.2%) to 95.006%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/GitlabAPI-Pipelines/GitlabPipelines.class.st	0	8	0.0%

Totals
Change from base Build 15488429333:	-0.2%
Covered Lines:	2264
Relevant Lines:	2383

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💛 - Coveralls