[CI] Add Browser Javascript SDK to releases

[aravindavk]

• Change sdk/js/Makefile to generate the file name with version number.
• Install esbuild in CI (Download and add to /usr/bin https://esbuild.github.io/getting-started/#download-a-build)
• cd to sdk/js and run VERSION=<version> make browser
• Add the file generated in dist directory(dist/kadalu-storage-<version>.min.js) to releases.

Node js library(make node) to be pushed to NPM registry, this we can explore later.