Add resource usage timeline diagrams to README

- Added Mermaid XY charts showing memory usage over time
- Individual charts for Elixir, TypeScript, Dart, Haskell, C
- Comparison chart for fast languages
- Shows how memory usage varies during program execution
- Based on actual timeline data from benchmark runs

timelines/Elixir/run_1.tsv

@@ -1,16 +1,16 @@
-15   2032 0
-42   2032 0
-65   2032 0
-94   2032 0
-119   2032 0
-146   2032 0
-169   2032 0
-193   2032 0
-221   2032 0
-246   2032 0
-270   2032 0
-296   2032 0
-319   2032 0
-343   2032 0
-367   2032 0
-393   2032 0
+14   1984 0
+39   2064 0
+65   2064 0
+94   2064 0
+117   2064 0
+143   2064 0
+165   2064 0
+188   2064 0
+214   2064 0
+237   2064 0
+261   2064 0
+285   2064 0
+306   2064 0
+333   2064 0
+356   2064 0
+382   2064 0

timelines/Elixir/run_2.tsv

@@ -1,15 +1,13 @@
-9   2032 0
-34   2032 0
-62   2032 0
-85   2032 0
-109   2032 0
-135   2032 0
-158   2032 0
-181   2032 0
-213   2032 0
-238   2032 0
-262   2032 0
-288   2032 0
-311   2032 0
-336   2032 0
-359   2032 0
+8   2048 0
+31   2048 0
+55   2048 0
+81   2048 0
+103   2048 0
+129   2048 0
+153   2048 0
+178   2048 0
+201   2048 0
+224   2048 0
+247   2048 0
+270   2048 0
+294   2048 0

timelines/Elixir/run_3.tsv

@@ -1,13 +1,12 @@
-9   2032 0
-31   2032 0
-57   2032 0
-79   2032 0
-102   2032 0
-126   2032 0
-155   2032 0
-179   2032 0
-202   2032 0
-227   2032 0
-249   2032 0
-272   2032 0
-296   2032 0
+9   2048 0
+32   2048 0
+55   2048 0
+79   2048 0
+102   2048 0
+126   2048 0
+149   2048 0
+173   2048 0
+200   2048 0
+223   2048 0
+248   2048 0
+272   2048 0

timelines/Elixir/run_4.tsv

@@ -1,12 +1,12 @@
-8   2048 0
-31   2048 0
-57   2048 0
-82   2048 0
-106   2048 0
-130   2048 0
-155   2048 0
-179   2048 0
-206   2048 0
-230   2048 0
-256   2048 0
-279   2048 0
+7   2048 0
+29   2048 0
+54   2048 0
+79   2048 0
+105   2048 0
+128   2048 0
+153   2048 0
+176   2048 0
+199   2048 0
+222   2048 0
+245   2048 0
+269   2048 0