Use {arg} to reference selected text in query shortcuts

[mejiaej]

My goal is to add the ability to insert the parameter anywhere in the query. I'm modifying the execution of query shortcuts by first checking if {arg} is present, if true just replace it with the parameter if not add the parameter at the end of the query just like it's been working until now.

This PR fixes #14893

[ghost]

All CLA requirements met.

[coveralls]

Pull Request Test Coverage Report for Build 703278774

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 179 unchanged lines in 10 files lost coverage.
• Overall coverage decreased (-0.007%) to 43.208%

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Files with Coverage Reduction	New Missed Lines	%
extensions/sql-database-projects/src/models/project.ts	1	95.47%
src/sql/workbench/contrib/notebook/browser/models/fileNotebookInput.ts	1	44.44%
src/sql/workbench/contrib/notebook/browser/models/untitledNotebookInput.ts	1	75.0%
extensions/azurecore/src/azureResource/utils.ts	3	6.6%
src/sql/platform/serialization/common/serializationService.ts	11	57.89%
src/sql/workbench/contrib/query/browser/actions.ts	21	38.54%
extensions/azurecore/src/extension.ts	22	0%
extensions/sql-database-projects/src/controllers/projectController.ts	31	59.71%
extensions/sql-database-projects/src/dialogs/addDatabaseReferenceDialog.ts	36	60.72%
src/sql/workbench/contrib/query/browser/messagePanel.ts	52	2.91%

Totals
Change from base Build 691450289:	-0.007%
Covered Lines:	25482
Relevant Lines:	53795

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💛 - Coveralls

[kburtram]

Seems reasonable to me. @alanrenmsft what do you think?

[kburtram]

@mejiaej could you please make the update @Charles-Gagnon suggests regarding doing a global replace? Thanks!

[mejiaej]

@kburtram can do, I'll do it later today. I'm on working hours right now 😂

[kburtram]

@mejiaej thanks! no rush. It would be good to have that update before we can merge.