Add Deno support

[samsam2310]

Deno require some different syntax from typescript. Add deno files as *.deno.ts to seperate them from other ts files.

• Deno files are rename to *.deno.ts when building.
• Import path is changed to *.deno.ts when building because deno requires to have extension but typescript requires to not have.
• Some files are changed to run on both node and deno.
• Deno dist files are deploy to another github repo for the users to import.

[codecov-commenter]

Codecov Report

Merging #16 (4ebbc46) into master (93bd903) will decrease coverage by 4.15%. The diff coverage is 82.66%.

@@            Coverage Diff             @@
##           master      #16      +/-   ##
==========================================
- Coverage   99.10%   94.94%   -4.16%     
==========================================
  Files           9       17       +8     
  Lines         224      297      +73     
  Branches       15       17       +2     
==========================================
+ Hits          222      282      +60     
- Misses          2       15      +13     

Impacted Files	Coverage Δ
src/module.ts	96.55% <ø> (ø)
scripts/deno-import.deno.ts	43.47% <43.47%> (ø)
scripts/deno-import.test.deno.ts	100.00% <100.00%> (ø)
src/deps/asserts.deno.ts	100.00% <100.00%> (ø)
src/deps/base64.deno.ts	100.00% <100.00%> (ø)
src/deps/canvas.deno.ts	100.00% <100.00%> (ø)
src/deps/expect.deno.ts	100.00% <100.00%> (ø)
src/deps/path.deno.ts	100.00% <100.00%> (ø)
src/test/utils.deno.ts	100.00% <100.00%> (ø)
src/test/utils.ts	100.00% <100.00%> (ø)

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[jcs224]

This is amazing. Thanks for putting in the time to do this! Just tried it and it works perfectly!