[inspector] Expose GetPossibleBreakpoints for wasm

test/inspector/debugger/wasm-get-breakable-locations-expected.txt

+Running testFunction...
+Script nr 0 parsed. URL: v8://test/testFunction
+Script nr 1 parsed. URL: v8://test/runTestFunction
+Script nr 2 parsed. URL: wasm://wasm/wasm-824d794e/wasm-824d794e-0
+This is a wasm script (nr 0).
+Script nr 3 parsed. URL: wasm://wasm/wasm-824d794e/wasm-824d794e-1
+This is a wasm script (nr 1).
+Querying breakable locations for all wasm scripts now...
+Requesting all breakable locations in wasm script 0
+4 breakable location(s):
+[0] 2:2 ||   >nop
+[1] 3:2 ||   >i32.const 12
+[2] 4:2 ||   >set_local 0
+[3] 5:0 || >end
+Requesting breakable locations in lines [0,3)
+1 breakable location(s):
+[0] 2:2 ||   >nop
+Requesting breakable locations in lines [4,6)
+2 breakable location(s):
+[0] 4:2 ||   >set_local 0
+[1] 5:0 || >end
+Requesting all breakable locations in wasm script 1
+7 breakable location(s):
+[0] 1:2 ||   >get_local 0
+[1] 2:2 ||   >if
+[2] 3:4 ||     >block
+[3] 4:6 ||       >call 0
+[4] 5:4 ||     >end
+[5] 6:2 ||   >end
+[6] 7:0 || >end
+Requesting breakable locations in lines [0,3)
+2 breakable location(s):
+[0] 1:2 ||   >get_local 0
+[1] 2:2 ||   >if
+Requesting breakable locations in lines [4,6)
+2 breakable location(s):
+[0] 4:6 ||       >call 0
+[1] 5:4 ||     >end
+Finished!