Add an ArrayList native for searching for byte sequences

[asherkin]

Split out of #966 for tracking, see that PR for more background detail.

Add a new FindArrayInArray native that takes an array of bytes to search for along with an offset to start matching from.

FindValueInArray(arr, 42, 1, 2); would become FindArrayInArray(arr, { 42, 42 }, 2, 1);

But this design also allows more flexible combinations such as FindArrayInArray(arr, { 11, 42 }, 2, 1);

And if we specify an additional limit param and wrap access to the input array, the first example can be simplified to: FindArrayInArray(arr, { 42 }, 1, 1, 2);

native int FindArrayInArray(Handle array, any[] needle, int needleLength, int start = 0, int limit = 0); 

Where:

• needle = the bytes to search.
• start = the byte offset in each block to start searching.
• limit = the number of bytes of the block to match, looping needle as needed, with the following special values:
  • -1 = the block size - start
  • 0 = needleLength
• needleLength > limit would be an error.
• limit > (block size - start) would be an error.
• 0 < start <= block size would be an error.

[sirdigbot]

Since this is searching within each block, would an index return value really be sufficient?
with FindValue/FindString you get an index to actually Get the value afterwards but you cant do that with your example without an additional output param

[sirdigbot]

Also since I want to help make it, would start and limit refer to bytes or cells counts