Update each tracks tests.toml file

[arcuru]

In #362 a tests.toml file was added to each track in order to track the list of implemented tests for that exercise. By default every test was listed as existing, which I doubt is the reality. We need to go through each test to match the implementation here with the problem specifications repo.

More details in #362

• [ ] acronym
• [ ] all-your-base
• [ ] allergies
• [ ] anagram
• [ ] armstrong-numbers
• [ ] atbash-cipher
• [ ] beer-song
• [ ] binary
• [ ] binary-search
• [ ] binary-search-tree
• [ ] bob
• [ ] circular-buffer
• [ ] clock
• [ ] collatz-conjecture
• [ ] complex-numbers
• [ ] crypto-square
• [ ] difference-of-squares
• [ ] etl
• [ ] food-chain
• [ ] gigasecond
• [ ] grade-school
• [ ] grains
• [ ] hamming
• [ ] hello-world
• [ ] hexadecimal
• [ ] isogram
• [ ] leap
• [ ] luhn
• [ ] matching-brackets
• [ ] meetup
• [ ] nth-prime
• [ ] nucleotide-count
• [ ] pangram
• [ ] pascals-triangle
• [ ] phone-number
• [ ] prime-factors
• [ ] protein-translation
• [ ] queen-attack
• [ ] raindrops
• [ ] reverse-string
• [ ] rna-transcription
• [ ] robot-name
• [ ] robot-simulator
• [ ] roman-numerals
• [ ] say
• [ ] scrabble-score
• [ ] secret-handshake
• [ ] series
• [ ] sieve
• [ ] space-age
• [ ] sum-of-multiples
• [ ] triangle
• [ ] trinary
• [ ] two-fer
• [ ] word-count