Sanitize db name for dacpac/bacpac file names (#5479)

* Sanitize db name for filename

* Add unit tests

* lower timeout to 60 seconds

* add extra coverageConfig.json and missing character check

extensions/dacpac/coverageConfig.json

@@ -0,0 +1,17 @@
+{
+	"enabled": false,
+	"relativeSourcePath": "..",
+	"relativeCoverageDir": "../../coverage",
+	"ignorePatterns": [
+		"**/node_modules/**"
+	],
+	"includePid": false,
+	"reports": [
+		"cobertura"
+	],
+	"verbose": false,
+	"remapOptions": {
+		"basePath": ".",
+		"useAbsolutePaths": true
+	}
+}