svg conversion (#717)

skyvern/forge/prompts/skyvern/svg-convert.j2

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+You are given a svg element. You need to figure out what its shape means.
+SVG Element:
+```
+{{svg_element}}
+```
+
+MAKE SURE YOU OUTPUT VALID JSON. No text before or after JSON, no trailing commas, no comments (//), no unnecessary quotes, etc.
+Reply in JSON format with the following keys:
+{
+    "confidence_float": float, // The confidence of the action. Pick a number between 0.0 and 1.0. 0.0 means no confidence, 1.0 means full confidence
+    "shape": string, // A short description of the shape of SVG and its meaning
+}