feat(ltr): add fallback styles for ltr + additional support.

[emoralesb05]

Description

Part of #323
Instead of assuming there will be a dir="ltr" or dir="rtl", there is a need to set defaults and then overrides when its dir="rtl", since there are use cases where devs wont use dir at all.

What's included?

• feat(rtl): added default rules for ltr support with overriding rlt rules.
• chore(rtl): polish usage of rtl
• bugfix(rtl): fixed cases where rtl wasnt being applied.
• feat(file-upload): added support for rtl.
• feat(json-formatter): added somewhat support for rtl (there is still issues around the strings.
• feat(search): added support for rtl.
• feat(paging): added suport for rtl.
• bugfix(notifications): fixed rtl support.
• bugfix(data-table): fixed rtl support.

Test Steps

• ng serve
• Go to http://localhost:4200/#/components
• Test components on both ltr and rtl

General Tests for Every PR

• ng serve --aot still works.
• npm run lint passes.
• npm test passes and code coverage is not lower.
• npm run build still works.

NOTE: we still need to figure out how to handle strings like Array [n] , etc etc in rtl

Also need to figure out how are we gonna handle rtl for utility classes like pad, push and pull

[akhedrane]

for utility classes, i think naming like pad-start & pad-end is more semantic.

[emoralesb05]

@akhedrane yeah, i was actually thinking something like that or pad-before and pad-after to be inline with material

[kyleledbetter]

We can leave the current left/right/top/bottom for explicit versions (they do this also in some places) and add additional before/after/above/below that are dynamic