feat: improvements to `ShareModal` and its parsing

[chicoferreira]

Rewrote ShareModal for a cleaner code and support for more formats.

Changes include:

• Now the name of the filter can be used instead of only the id
• Removed the loading animation when importing
• Changed nomenclature of "link" to "code"

Shifts parsing also keep the feature of parsing shifts separated by comma format (DSS=PL1,T1)

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[chicoferreira]

Shift copy output now has selected shifts with the same identifier grouped by commas