Switch the pretty output to use colons to separate file:line:char so that lines are clickable in terminals (#20736)

Author: orta

src/compiler/program.ts

@@ -331,11 +331,11 @@ namespace ts {
                 }
 
                 output += formatColorAndReset(relativeFileName, ForegroundColorEscapeSequences.Cyan);
-                output += "(";
+                output += ":";
                 output += formatColorAndReset(`${ firstLine + 1 }`, ForegroundColorEscapeSequences.Yellow);
-                output += ",";
+                output += ":";
                 output += formatColorAndReset(`${ firstLineChar + 1 }`, ForegroundColorEscapeSequences.Yellow);
-                output += "): ";
+                output += " - ";
             }
 
             const categoryColor = getCategoryFormat(diagnostic.category);

tests/baselines/reference/prettyContextNotDebugAssertion.errors.txt

@@ -1,4 +1,4 @@
-tests/cases/compiler/index.ts(2,1): error TS1005: '}' expected.
+tests/cases/compiler/index.ts:2:1 - error TS1005: '}' expected.
 
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