Stop merging path of SVG on import

[buckle2000]

Closes #320

[buckle2000]

I removed mergePaths plugin from svgo.

ShapeShifter/src/app/modules/editor/scripts/svgo/index.ts

Line 82 in 81b24ff

// mergePaths,

Now this test will fail.

ShapeShifter/src/app/modules/editor/scripts/import/SvgLoader.spec.ts

Lines 42 to 68 in 2db2357

	it(`can import simple SVG with group/path transformations`, done => {
	const svg = `
	<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
	<path d="M 0 0 L 10 10 L 20 20 L 30 30" transform="scale(2, 2)"/>
	<path d="M 0 0 L 10 10 L 20 20 L 30 30" transform="scale(2, 2) rotate(180)"/>
	<path d="M 0 0 L 10 10 L 20 20 L 30 30" transform="rotate(180) scale(2, 2)"/>
	<path d="M 0 0 L 10 10 L 20 20 L 30 30" transform="translate(10, 20) rotate(180) scale(2, 2)"/>
	<path d="M 0 0 L 10 10 L 20 20 L 30 30" transform="rotate(180) scale(2, 2) translate(10, 20)"/>
	<g transform="scale(2, 2)">
	<path d="M 0 0 L 10 10 L 20 20 L 30 30" transform="translate(10, 20)"/>
	</g>
	</svg>
	`;
	SvgLoader.loadVectorLayerFromSvgString(svg, () => false).then(vl => {
	const paths = [
	'M 0 0 L 20 20 L 40 40 L 60 60',
	'M 0 0 L -20 -20 L -40 -40 L -60 -60',
	'M 0 0 L -20 -20 L -40 -40 L -60 -60',
	'M 10 20 L -10 0 L -30 -20 L -50 -40',
	'M -20 -40 L -40 -60 L -60 -80 L -80 -100',
	'M 20 40 L 40 60 L 60 80 L 80 100',
	];
	const actualPath = (vl.children[0] as PathLayer).pathData.getPathString();
	expect(actualPath).toBe(paths.join(' '));
	done();
	});
	});

[buckle2000]

I also think we don't need collapseGroups on import.