C++: Update naming of queries and paths to use "summary" instead of "metrics"

Author: Dave Bartolomeo

cpp/ql/src/Diagnostics/Files.ql renamed to cpp/ql/src/Summary/Files.ql

@@ -2,7 +2,7 @@
  * @name Total source files
  * @description The total number of source files.
  * @kind metric
- * @id cpp/metrics/files
+ * @id cpp/summary/files
  */
 
 import cpp

cpp/ql/src/Diagnostics/Lines.ql renamed to cpp/ql/src/Summary/Lines.ql

@@ -2,7 +2,7 @@
  * @name Total lines of text
  * @description The total number of lines of text across all source files.
  * @kind metric
- * @id cpp/metrics/lines
+ * @id cpp/summary/lines
  */
 
 import cpp

cpp/ql/src/Diagnostics/LinesOfCode.ql renamed to cpp/ql/src/Summary/LinesOfCode.ql

@@ -2,7 +2,7 @@
  * @name Total lines of code
  * @description The total number of lines of code across all source files.
  * @kind metric
- * @id cpp/metrics/lines-of-code
+ * @id cpp/summary/lines-of-code
  */
 
 import cpp

cpp/ql/src/Diagnostics/LinesOfCodePerFile.ql renamed to cpp/ql/src/Summary/LinesOfCodePerFile.ql

@@ -2,7 +2,7 @@
  * @name Lines of code per source file
  * @description The number of lines of code for each source file.
  * @kind metric
- * @id cpp/metrics/lines-of-code-per-file
+ * @id cpp/summary/lines-of-code-per-file
  */
 
 import cpp

cpp/ql/src/Diagnostics/LinesPerFile.ql renamed to cpp/ql/src/Summary/LinesPerFile.ql

@@ -2,7 +2,7 @@
  * @name Lines of text per source file
  * @description The number of lines of text for each source file.
  * @kind metric
- * @id cpp/metrics/lines-per-file
+ * @id cpp/summary/lines-per-file
  */
 
 import cpp