chore: batch session with token gas payments

[joepegler]

PR-Codex overview

This PR updates Biconomy SDK with new features and improvements.

Detailed summary

• Updated package name to @biconomy-devx/account
• Added new constants for Biconomy token paymaster
• Improved session parameters in types
• Added new test files for playground read and write tests
• Added functions for supported signer and session parameters conversion

The following files were skipped due to too many changes: src/modules/sessions/abi.ts, examples/CREATE_AND_USE_A_SESSION.md, src/modules/utils/Helper.ts, tests/modules/write.test.ts

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[github-actions[bot]]

size-limit report 📦

Path	Size
core (esm)	54.45 KB (+0.14% 🔺)
core (cjs)	59.59 KB (+0.19% 🔺)
account (tree-shaking)	52.34 KB (0%)
bundler (tree-shaking)	2.63 KB (0%)
paymaster (tree-shaking)	2.33 KB (0%)
modules (tree-shaking)	40.57 KB (0%)