Including FastFloat in parsing process (#62301)

Including FastFloat in parsing process (#62301)

* Including FastFloat in parsing process

* PR step 1 - adjusting code in regards to received comments.

* DigitsToUInt64 : Parsing batches of 8 digits with SWAR

* Update src/libraries/System.Private.CoreLib/src/System/Number.NumberToFloatingPointBits.cs

Co-authored-by: Günther Foidl <gue@korporal.at>
* Update src/libraries/System.Private.CoreLib/src/System/Number.NumberToFloatingPointBits.cs

Co-authored-by: Günther Foidl <gue@korporal.at>
* MaxMantissaFastPath fix

* merge problem...

* Revert "merge problem..."

This reverts commit 1b5fd5136a5396c6439ffd47ef46d0c8b3134693.

* removing an extra comparison for fast path.

* According to PR review, all requested changes are in this commit.

* According to new serie of comments on this PR.

* Fixing formatting.

* fixing sentence ending in comments

* Update THIRD-PARTY-NOTICES.TXT

Adding license notice for FastFloat algorithm

* Update src/libraries/System.Private.CoreLib/src/System/Number.NumberToFloatingPointBits.cs

Co-authored-by: Tanner Gooding <tagoo@outlook.com>
* Identation of power of 5 table

* some adjustements according to reviewer's requests.

* Unnecessary assignment of a value to 'exponent'

* removing excedent path for total digits < 7

* removing path for totaldigits <7

* getting rid of unused power of 10 table

* Renaming FastFloat specific values
Specifying infinitePower param as hexa

* renaming some variables and adjusting comments.

* Handle endianness swapping for BigEndian systems.

Co-authored-by: Günther Foidl <gue@korporal.at>
Co-authored-by: Tanner Gooding <tagoo@outlook.com>