Publish Graph of Growth in Tools

[msymons]

The Tool Center shows that there are 164 tools as of 30th November 2022.

This gives no indication of the rate of growth. I examined the history of tools.yml (and tools.json before that) and extracted data that I believe would make for an interesting graph. Hence this issue.... an enhancement suggestion

November 2022       164
October 2022        155
Sept 2022           152
August 2022         146
July 2022           135
June 2022           131
May 2022            129
April 2022          124
March 2022          119
February 2022       107
January 2022        100
December 2021       90
November 2021       86
October 2021        84
September 2021      81
August 2021         67
July 2021           67
June 2021           67
May 2021            63
April 2021          51
March 2021          51
February 2021       48
January 2021        48
December 2021       48
November 2021       47
October 2021        47
September           46
August 2021         44
July 2021           42